SN 56.1

Samādhisutta

Sāvatthinidānaṁ. …pe… “Samādhiṁ, bhikkhave, bhāvetha. Samāhito, bhikkhave, bhikkhu yathābhūtaṁ pajānāti. Kiñca yathābhūtaṁ pajānāti? ‘Idaṁ dukkhan’ti yathābhūtaṁ pajānāti, ‘ayaṁ dukkhasamudayo’ti yathābhūtaṁ pajānāti, ‘ayaṁ dukkhanirodho’ti yathābhūtaṁ pajānāti, ‘ayaṁ dukkhanirodhagāminī paṭipadā’ti yathābhūtaṁ pajānāti. Samādhiṁ, bhikkhave, bhāvetha. Samāhito, bhikkhave, bhikkhu yathābhūtaṁ pajānāti.

Immersion

At Sāvatthī. “Mendicants, develop immersion. A mendicant who has immersion truly understands. What do they truly understand? They truly understand: ‘This is suffering’ … ‘This is the origin of suffering’ … ‘This is the cessation of suffering’ … ‘This is the practice that leads to the cessation of suffering’. Develop immersion. A mendicant who has immersion truly understands.

Tasmātiha, bhikkhave, ‘idaṁ dukkhan’ti yogo karaṇīyo, ‘ayaṁ dukkhasamudayo’ti yogo karaṇīyo, ‘ayaṁ dukkhanirodho’ti yogo karaṇīyo, ‘ayaṁ dukkhanirodhagāminī paṭipadā’ti yogo karaṇīyo”ti.

That’s why you should practice meditation to understand: ‘This is suffering’ … ‘This is the origin of suffering’ … ‘This is the cessation of suffering’ … ‘This is the practice that leads to the cessation of suffering’.”