Digha Nikaya 19 (dn19:43.1)

Atha kho, bho, mahāgovindo brāhmaṇo puratthimena nagarassa navaṁ sandhāgāraṁ kārāpetvā vassike cattāro māse paṭisallīyi, karuṇaṁ jhānaṁ jhāyi;