The Buddha addresses the monks in the Migadāya at Isipatana und tells them how he had first preached the Four Noble Truths there. He exhorts them to follow Sāriputta und Moggallāna, und then retires to his cell.
Sāriputta takes up the discourse und gives a detailed explanation of the Truths. M.iii.248 52.
This sutta is incorporated in the concluding portion of the Mahāsatipatthāna Sutta.