KaccānaKaccānasutta

So I have heard.Evaṁ me sutaṁ— At one time the Buddha was staying near Sāvatthī in Jeta’s Grove, Anāthapiṇḍika’s monastery.ekaṁ samayaṁ bhagavā sāvatthiyaṁ viharati jetavane anāthapiṇḍikassa ārāme. Now at that time Venerable Mahākaccāna was sitting not far from the Buddha, cross-legged, with his body straight and mindfulness of the body well-established internally on the present.Tena kho pana samayena āyasmā mahākaccāno bhagavato avidūre nisinno hoti pallaṅkaṁ ābhujitvā ujuṁ kāyaṁ paṇidhāya kāyagatāya satiyā ajjhattaṁ parimukhaṁ sūpaṭṭhitāya.

The Buddha saw him meditating there.Addasā kho bhagavā āyasmantaṁ mahākaccānaṁ avidūre nisinnaṁ pallaṅkaṁ ābhujitvā ujuṁ kāyaṁ paṇidhāya kāyagatāya satiyā ajjhattaṁ parimukhaṁ sūpaṭṭhitāya.

Then, understanding this matter, on that occasion the Buddha expressed this heartfelt sentiment:Atha kho bhagavā etamatthaṁ viditvā tāyaṁ velāyaṁ imaṁ udānaṁ udānesi:

“Their mindfulness would always“Yassa siyā sabbadā sati, be established in the body, constant:Satataṁ kāyagatā upaṭṭhitā; ‘It might not be, and it might not be mine,No cassa no ca me siyā, It will not be, and it will not be mine.’Na bhavissati na ca me bhavissati; Meditating stage by stage on that,Anupubbavihāri tattha so, in time they’d cross over clinging.”Kāleneva tare visattikan”ti.