111 (Day) Dhammānupassanā —Twelve Sense Bases (Exercise 34 in Satipaṭṭhāna Practices)| Satipaṭṭhāna Sutta (MN 10) | Study Notes from BMV Monday Sutta Study with Bhante Dr. G. Chandima

4.3 Dhammānupassanā: Contemplation of the Twelve Sense Bases (āyatanesu)

Puna caparaṃ, bhikkhave, bhikkhu dhammesu dhammānupassī viharati chasu ajjhattikabāhiresu āyatanesu. Kathañca pana, bhikkhave, bhikkhu dhammesu dhammānupassī viharati chasu ajjhattikabāhiresu āyatanesu?

Again, further, bhikkhus, a bhikkhu dwells contemplating mental phenomena as mental phenomena about the six internal and external sense bases. And how, bhikkhus, does a bhikkhu dwell contemplating mental phenomena as mental phenomena about the six internal and external sense bases?

• This passage introduces sense-based contemplation (āyatana-anupassanā) as a mode of dhammānupassanā. The emphasis is not on sensory objects alone, but on the entire experiential field where internal faculties and external objects meet, forming the primary ground for craving, aversion, and delusion.

4.3.1  Eye and Visible Forms

Idha, bhikkhave, bhikkhu cakkhuñca pajānāti, rūpe ca pajānāti, yañca tadubhayaṃ paṭicca uppajjati saṃyojanaṃ tañca pajānāti, yathā ca anuppannassa saṃyojanassa uppādo hoti tañca pajānāti, yathā ca uppannassa saṃyojanassa pahānaṃ hoti tañca pajānāti, yathā ca pahīnassa saṃyojanassa āyatiṃ anuppādo hoti tañca pajānāti.

Here, bhikkhus, a bhikkhu understands the eye, understands visible forms, and understands the fetter that arises dependent on both. He/she understands how the arising of an unarisen fetter comes to be; he/she understands how the abandoning of an arisen fetter comes to be; and he/she understands how the non-arising in the future of an abandoned fetter comes to be.

• This contemplation reveals that bondage does not lie in forms themselves, nor in the eye alone, but in the reactive bond (saṃyojana) formed through their conjunction. Seeing, when infused with craving or aversion, becomes a site of clinging. Insight here protects the thoughts at the door of the visual sense.

4.3.2 Ear and Sounds

Sotañca pajānāti, sadde ca pajānāti, yañca tadubhayaṃ paṭicca uppajjati saṃyojanaṃ tañca pajānāti, yathā ca anuppannassa saṃyojanassa uppādo hoti tañca pajānāti, yathā ca uppannassa saṃyojanassa pahānaṃ hoti tañca pajānāti, yathā ca pahīnassa saṃyojanassa āyatiṃ anuppādo hoti tañca pajānāti.

He/she understands the ear, understands sounds, and understands the fetter that arises dependent on both. He/she understands how the arising of an unarisen fetter comes to be; how an arisen fetter is abandoned; and how a fetter that has been abandoned does not arise again in the future.

• Hearing conditions reactive judgment, emotional memory, and proliferation. This contemplation trains sensitivity to how praise, blame, noise, or speech trigger mental bondage—and how mindful listening dismantles it.

4.3.3 Nose and Odours

Ghānañca pajānāti, gandhe ca pajānāti, yañca tadubhayaṃ paṭicca uppajjati saṃyojanaṃ tañca pajānāti, yathā ca anuppannassa saṃyojanassa uppādo hoti tañca pajānāti, yathā ca uppannassa saṃyojanassa pahānaṃ hoti tañca pajānāti, yathā ca pahīnassa saṃyojanassa āyatiṃ anuppādo hoti tañca pajānāti.

He/she understands the nose, understands odors, and understands the fetter that arises dependent on both. H/shee understands the arising of an unarisen fetter, the abandoning of an arisen fetter, and the future non-arising of an abandoned fetter.

• Smell operates subtly, often activating memory-based craving or aversion. This contemplation sharpens awareness of how even faint sensory contact can condition clinging, revealing the depth of latent tendencies (anusaya).

4.3.4 Tongue and Tastes

Jivhañca pajānāti, rase ca pajānāti, yañca tadubhayaṃ paṭicca uppajjati saṃyojanaṃ tañca pajānāti, yathā ca anuppannassa saṃyojanassa uppādo hoti tañca pajānāti, yathā ca uppannassa saṃyojanassa pahānaṃ hoti tañca pajānāti, yathā ca pahīnassa saṃyojanassa āyatiṃ anuppādo hoti tañca pajānāti.

He/she understands the tongue, understands tastes, and understands the fetter that arises dependent on both. He/she understands how fetters arise, how they are abandoned, and how they do not arise again in the future.

• Taste is a primary gateway for sensual craving (kāmacchanda). This contemplation transforms eating from indulgence into insight, revealing how obsessive desire is conditioned—not inherent.

4.3.5 Body and Tangible Objects

Kāyañca pajānāti, phoṭṭhabbe ca pajānāti, yañca tadubhayaṃ paṭicca uppajjati saṃyojanaṃ tañca pajānāti, yathā ca anuppannassa saṃyojanassa uppādo hoti tañca pajānāti, yathā ca uppannassa saṃyojanassa pahānaṃ hoti tañca pajānāti, yathā ca pahīnassa saṃyojanassa āyatiṃ anuppādo hoti tañca pajānāti.

He/she understands the body, understands tangible objects, and understands the fetter that arises dependent on both. He/she understands the arising, abandoning, and future non-arising of fetters.

• Bodily contact conditions comfort-seeking, resistance to pain, and identity with physical states. Insight here dismantles clinging to pleasure and aversion to discomfort, grounding equanimity (upekkhā).

4.3.6  Mind and Mental Phenomena

Manañca pajānāti, dhamme ca pajānāti, yañca tadubhayaṃ paṭicca uppajjati saṃyojanaṃ tañca pajānāti, yathā ca anuppannassa saṃyojanassa uppādo hoti tañca pajānāti, yathā ca uppannassa saṃyojanassa pahānaṃ hoti tañca pajānāti, yathā ca pahīnassa saṃyojanassa āyatiṃ anuppādo hoti tañca pajānāti.

He /she understands the mind, understands mental phenomena, and understands the fetter that arises dependent on both. He/she  understands how fetters arise, how they are abandoned, and how they do not arise again in the future.

• This is the subtlest sense base, where views, emotions, and identities crystallize. By observing mental objects without appropriation, the practitioner directly undermines self-view (sakkāya-diṭṭhi), leading mindfulness toward liberating wisdom.

4.3.7 Iti ajjhattaṃ vā dhamme dhammānupassī viharati, bahiddhā vā dhamme dhammānupassī  viharati, ajjhattabahiddhā vā dhamme dhammānupassī  viharati;

Thus, he/she dwells contemplating the mental phenomena internally, or he/she dwells contemplating the mental phenomena externally (universalizing the nature of the twelve sense bases), or he/she dwells contemplating the mental phenomena both internally and externally.

• The triadic formula—internal, external, and both—broadens mindfulness beyond the self. Observing one’s twelve sense bases (ajjhattaṃ) cultivates introspective clarity; observing others’ twelve sense bases bahiddhā) nurtures empathy and non-clinging; observing both dissolves the boundary between self and other, revealing universality in the mental phenomena processes.

4.3.8 Samudayadhammānupassī vā dhammesu viharati, vayadhammānupassī vā dhammesu viharati, samudayavayadhammānupassī vā dhammesu viharati.

They dwell observing the mental phenomena as subject to origination, as subject to vanishing, or as subject to both origination and vanishing.

• This section deepens contemplation into anicca-saññā—the perception of impermanence. One sees the mental phenomenon as a process, continuously arising and ceasing. Awareness of this flux uproots craving and builds insight into dukkha and anattā. The thought is no longer “mine,” but a transient flow of conditions.

4.3.9 ‘Atthi dhammā’ti vā panassa sati paccupaṭṭhitā hoti. Yāvadeva ñāṇamattāya paṭissatimattāya anissito ca viharati, na ca kiñci loke upādiyati.

Or mindfulness that ‘there is a thought’ is established to the extent necessary for knowledge and right mindfulness. And they dwell unassociating, not grasping at anything in the world.

• At this stage, awareness becomes purified of grasping. The practitioner does not think “I am the mental phenomenon,” but merely recognizes “there is a mental phenomenon.” This detached observation marks the maturity of mindfulness: awareness for the sake of knowing, not for owning. One abides free from worldly attachment (anissito ca viharati).

Evampi kho, bhikkhave, bhikkhu dhamme dhammānupassī viharati.

In this way, monks, a monk dwells observing the mental phenomena in the mental phenomena.

Further Notes on the Twelve Sense Bases  (Exercise 34 in Satipaṭṭhāna Practices)

Why the Twelve Are Called “Sense Bases” (āyatana)

• Internal bases (ajjhattika āyatana) are called “bases” because they are the conditions that allow experience to arise (eye enables seeing, ear enables hearing, etc.).

• External bases (bāhira āyatana) are called “bases” because they are the fields or domains (conditions) that impinge upon the faculties.

• Bondage does not lie in either alone, but in the reactive link (saṃyojana) that arises dependent on both (tadubhayaṃ paṭicca).

This is why the Buddha places sense-base contemplation under dhammānupassanā: it exposes where fetters actually arise and cease.

How to Understand the Functioning of the Five Aggregates and the Twelve Sense Bases in Our Daily Experience

Although the five aggregates are the primary constituents of our psycho-physical existence, sentient beings more immediately experience life through the twelve sense bases. These sense bases function like dynamic factories—constantly creating, processing, and projecting our engagement with the external world.

In daily life, we rarely analyze experience in terms of aggregates. Instead, we see, hear, smell, taste, touch, and think. Through how we go through these twelve sense bases, happiness and unhappiness arise. Therefore, understanding how we relate to pleasure and pain in everyday life is fundamentally a matter of understanding the twelve sense bases in operation.

In short:

The five aggregates describe what we are composed of.
The twelve sense bases explain how we experience and react/respond.

* How Knowing the Three Critical Aspects of the Six Internal/External Sense Bases Helped Ascetic Siddhartha Awaken (Paṭhama Pubbe Sambodha Sutta SN 35.13) (Dutiya Pubbe Sambodha Sutta SN 35.14)

The Buddha points out that it was only after fully understanding the pleasure and happiness of the six internal sense bases (gratification), recognizing their drawbacks (drawback), and realizing the letting go of clinging to them (escape) that he declared his Buddhahood.

This means that we need a proper understanding of these three aspects in order to fully comprehend the twelve sense bases.

* Are the Twelve Sense Bases the Very Cause of Dukkha? (Paṭhama Dukkhuppāda Sutta, SN 35.21) and (Dutiya Dukkhuppāda Sutta SN 35.22)

Yes, the Buddha also states that the very operation of these twelve sense bases is the fundamental condition for the arising of dukkha.

For each pair, the practitioner is required to carry out six tasks:

1. Cakkhuñca pajānāti – One should know the particular internal sense base — in this case, the eye.

2. Rūpe ca pajānāti – One should know the objects that come to the eye — in this case, visible forms.

3. Yañca tadubhayaṃ paṭicca uppajjati saṃyojanaṃ tañca pajānāti – One should know the specific fetter or fetters that arise dependent on the meeting of the eye and visible forms.

4.Yathā ca anuppannassa saṃyojanassa uppādo hoti
– how an unarisen fetter comes to arise

5.Yathā ca uppannassa saṃyojanassa pahānaṃ hoti
– how an arisen fetter is abandoned

6.Yathā ca pahīnassa saṃyojanassa āyatiṃ anuppādo hoti
– how a removed fetter does not arise again in the future

1. Eye (cakkhu) & Visible Forms (rūpa)

Why They Are Bases

• Cakkhu = internal capacity to see

• Rūpa = visual field (shapes, colours, screens, faces)

How the Fetters Arise

• When a desirable object appears at the eye-door and one delights in it as pleasurable, sensual desire arises.

• When encountering an undesirable object and reacting with aversion, ill will arises.

• Thinking, “Apart from me, no one else can understand this object,” conceit arises.

• Taking the visible object as permanent and lasting, wrong view arises.

• Doubting whether the object belongs to a being or self, doubt arises.

• Aspiring for a fortunate rebirth through such experiences, craving for existence arises.

• Thinking such attainment can be gained through particular rites and rituals, clinging to rites and rituals arises.

• Due to co-arisen ignorance in all these cases, ignorance arises.

How is it abandoned

• Seeing is known as seeing, not as “beauty” or “me.”

• The image is seen as impermanent, constructed, and  dependently arisen

How does it not arise again

• Repeated non-identification weakens the habit

• Visual stimulation no longer automatically produces craving

Daily-life importance

• Prevents envy, lust, and body-based insecurity.

• Trains ethical seeing in advertising, social media, and consumer culture.

2. Ear (sota) & Sounds (sadda)

Why They Are Bases

• Sota = auditory sensitivity

• Sadda = praise, blame, noise, music, speech

How the Fetters Arise

• When a desirable object appears at the ear-door and one delights in it as pleasurable, sensual desire arises.

• When encountering an undesirable object and reacting with aversion, ill will arises.

• Thinking, “Apart from me, no one else can understand this object,” conceit arises.

• Taking the sound object as permanent and lasting, wrong view arises.

• Doubting whether the object belongs to a being or self, doubt arises.

• Aspiring for a fortunate rebirth through such experiences, craving for existence arises.

• Thinking such attainment can be gained through particular rites and rituals, clinging to rites and rituals arises.

• Due to co-arisen ignorance in all these cases, ignorance arises.

How is it abandoned

• Sound is known before interpretation.

• Words are heard as conditions, not personal attacks or validations.

How does it not arise again

• Reduced emotional reactivity to speech.

• No automatic entanglement with opinions.

Daily-life importance

• Stops gossip-driven harm.

• Supports right speech and patient listening.

3. Nose (ghāna) & Odors (gandha)

Why They Are Bases

• Ghāna = olfactory sensitivity

• Gandha = pleasant or unpleasant smells

How the Fetters Arise

• When a desirable object appears at the nose-door and one delights in it as pleasurable, sensual desire arises.

• When encountering an undesirable object and reacting with aversion, ill will arises.

• Thinking, “Apart from me, no one else can understand this object,” conceit arises.

• Taking the olfactory object as permanent and lasting, wrong view arises.

• Doubting whether the object belongs to a being or self, doubt arises.

• Aspiring for a fortunate rebirth through such experiences, craving for existence arises.

• Thinking such attainment can be gained through particular rites and rituals, clinging to rites and rituals arises.

• Due to co-arisen ignorance in all these cases, ignorance arises.

How is it abandoned

• Smell is clearly known as a passing sensory event, not as satisfaction.
• Pleasantness is observed without mental grasping or imaginative elaboration.
• One recognizes: “This is only odor, arising and ceasing.”

How does it not arise again?

• Reduced habitual chasing of pleasant smells or avoidance of unpleasant ones.

• Strengthening sense-restraint (indriya-saṃvara) at the level of the nose faculty.

• Less emotional conditioning is tied to scent-based memory.

Daily-life importance

• Prevents unconscious mood shifts caused by scent-triggered memories.

• Reduces attachment to atmospheres, products, or identities linked to smell.

• Cultivates calm neutrality when encountering attractive or repulsive odors.

4. Tongue (jivhā) & Tastes (rasa)

Why They Are Bases

• Jivhā = taste sensitivity

• Rasa = flavors

How the Fetters Arise

• When a desirable object appears at the tongue-door and one delights in it as pleasurable, sensual desire arises.

• When encountering an undesirable object and reacting with aversion, ill will arises.

• Thinking, “Apart from me, no one else can understand this object,” conceit arises.

• Taking the tasty object as permanent and lasting, wrong view arises.

• Doubting whether the object belongs to a being or self, doubt arises.

• Aspiring for a fortunate rebirth through such experiences, craving for existence arises.

• Thinking such attainment can be gained through particular rites and rituals, clinging to rites and rituals arises.

• Due to co-arisen ignorance in all these cases, ignorance arises.

How is it abandoned

• Eating with clear comprehension (sampajāna).
• Taste is experienced without appropriation.

How does it not arise again

• Mindful eating weakens greed (neither overeating nor overdrinking).

• Taste no longer dictates behaviour.

Daily-life importance

• Prevents excess consumption.

• Cultivates contentment and health.

5. Body (kāya) & Tangibles (phoṭṭhabba)

Why They Are Bases

• Kāya = tactile sensitivity

• Phoṭṭhabba = pressure, heat, pain, comfort

How the Fetters Arise

• When a desirable object appears at the body-door and one delights in it as pleasurable, sensual desire arises.

• When encountering an undesirable object and reacting with aversion, ill will arises.

• Thinking, “Apart from me, no one else can understand this object,” conceit arises.

• Taking the tactile object as permanent and lasting, wrong view arises.

• Doubting whether the object belongs to a being or self, doubt arises.

• Aspiring for a fortunate rebirth through such experiences, craving for existence arises.

• Thinking such attainment can be gained through particular rites and rituals, clinging to rites and rituals arises.

• Due to co-arisen ignorance in all these cases, ignorance arises.

How is it abandoned

• Touch is known as sensation, not as threat or reward.
• Pain is observed without hatred.

How does it not arise again

• Increased tolerance and equanimity.

• Less reactivity in discomfort.

Daily-life importance

• Supports patience, resilience.

• Prevents impulsive behaviour driven by bodily states.

6. Mind (mano) & Mental Phenomena (dhammā)

Why They Are Bases

• Mano = cognitive faculty

• Dhammā = thoughts, memories, emotions, views

How the Fetters Arise

• When a desirable object appears at the mind-door and one delights in it as pleasurable, sensual desire arises.

• When encountering an undesirable object and reacting with aversion, ill will arises.

• Thinking, “Apart from me, no one else can understand this object,” conceit arises.

• Taking the thought object as permanent and lasting, wrong view arises.

• Doubting whether the object belongs to a being or self, doubt arises.

• Aspiring for a fortunate rebirth through such experiences, craving for existence arises.

• Thinking such attainment can be gained through particular rites and rituals, clinging to rites and rituals arises.

• Due to co-arisen ignorance in all these cases, ignorance arises.

How is it abandoned

• Thoughts are known as events, not truths.
• Mental content is observed, not believed.

How does it not arise again

• Less mental proliferation

• Freedom from compulsive thinking loops

Daily-life importance

• Prevents anxiety, rumination, and ideological rigidity

• Foundation for wisdom (paññā)

Through Which Paths Are Fetters Eliminated?

• The five fetters of wrong view, doubt, attachment to rites and rituals, envy, and stinginess are permanently eliminated by the Path of Stream-Entry (Sotāpatti-magga).

• The coarse forms of sensual desire and ill will are weakened by the Path of Once-Returner (Sakadāgāmi-magga), and their subtle forms are eliminated by the Path of Non-Returner (Anāgāmi-magga).

• Conceit, craving for existence, and ignorance are eliminated by the Path of Arahantship (Arahattamagga).

Why These Six Pairs Matter in Daily Life

Together, they:

• Show where unwholesomeness actually begins

• Shift practice from suppression to understanding

• Train in sense-door mindfulness, the first defence against greed, hatred, and delusion

• Transform ordinary life into a continuous field of insight

Unwholesome states do not arise randomly —
they arise at the sense doors,
and they cease at the sense doors.

Final Integrative Insight

The Twelve Sense Bases are not a theory of perception; They are a map of liberation in daily life.

By knowing:

• the base,

• the contact,

• the fetter,

• its arising,

• its abandoning,

• and its future non-arising,

One learns how not to become unwholesome before unwholesomeness fully forms.