And how does a mendicant meditate observing an aspect of feelings? It’s when a mendicant who feels a pleasant feeling knows: ‘I feel a pleasant feeling.’ When they feel a painful feeling, they know: ‘I feel a painful feeling.’ When they feel a neutral feeling, they know: ‘I feel a neutral feeling.’ When they feel a pleasant feeling of the flesh, they know: ‘I feel a pleasant feeling of the flesh.’ When they feel a pleasant feeling not of the flesh, they know: ‘I feel a pleasant feeling not of the flesh.’ When they feel a painful feeling of the flesh, they know: ‘I feel a painful feeling of the flesh.’ When they feel a painful feeling not of the flesh, they know: ‘I feel a painful feeling not of the flesh.’ When they feel a neutral feeling of the flesh, they know: ‘I feel a neutral feeling of the flesh.’ When they feel a neutral feeling not of the flesh, they know: ‘I feel a neutral feeling not of the flesh.’
Kathañca pana, bhikkhave, bhikkhu vedanāsu vedanānupassī viharati? Idha, bhikkhave, bhikkhu sukhaṁ vā vedanaṁ vedayamāno ‘sukhaṁ vedanaṁ vedayāmī’ti pajānāti. Dukkhaṁ vā vedanaṁ vedayamāno ‘dukkhaṁ vedanaṁ vedayāmī’ti pajānāti. Adukkhamasukhaṁ vā vedanaṁ vedayamāno ‘adukkhamasukhaṁ vedanaṁ vedayāmī’ti pajānāti. Sāmisaṁ vā sukhaṁ vedanaṁ vedayamāno ‘sāmisaṁ sukhaṁ vedanaṁ vedayāmī’ti pajānāti. Nirāmisaṁ vā sukhaṁ vedanaṁ vedayamāno ‘nirāmisaṁ sukhaṁ vedanaṁ vedayāmī’ti pajānāti. Sāmisaṁ vā dukkhaṁ vedanaṁ vedayamāno ‘sāmisaṁ dukkhaṁ vedanaṁ vedayāmī’ti pajānāti. Nirāmisaṁ vā dukkhaṁ vedanaṁ vedayamāno ‘nirāmisaṁ dukkhaṁ vedanaṁ vedayāmī’ti pajānāti. Sāmisaṁ vā adukkhamasukhaṁ vedanaṁ vedayamāno ‘sāmisaṁ adukkhamasukhaṁ vedanaṁ vedayāmī’ti pajānāti. Nirāmisaṁ vā adukkhamasukhaṁ vedanaṁ vedayamāno ‘nirāmisaṁ adukkhamasukhaṁ vedanaṁ vedayāmī’ti pajānāti.
And so they meditate observing an aspect of feelings internally, externally, and both internally and externally. With respect to feelings, they meditate observing the liability to originate, to vanish, and to originate and vanish. Or mindfulness is established that feelings exist, to the extent necessary for knowledge and mindfulness. They meditate independent, not grasping at anything in the world. That’s how a mendicant meditates by observing an aspect of feelings.
Iti ajjhattaṁ vā vedanāsu vedanānupassī viharati, bahiddhā vā vedanāsu vedanānupassī viharati, ajjhattabahiddhā vā vedanāsu vedanānupassī viharati. Samudayadhammānupassī vā vedanāsu viharati, vayadhammānupassī vā vedanāsu viharati, samudayavayadhammānupassī vā vedanāsu viharati. ‘Atthi vedanā’ti vā panassa sati paccupaṭṭhitā hoti yāvadeva ñāṇamattāya paṭissatimattāya anissito ca viharati, na ca kiñci loke upādiyati. Evampi kho, bhikkhave, bhikkhu vedanāsu vedanānupassī viharati.
Source
Translated by Bhikkhu Sujato and dedicated to the public domain under CC0. The Pali is the Mahāsaṅgīti edition, also CC0. Source: SuttaCentral.