A monk whose verses in the Theragāthā tell depict him encouraging the Buddha to return to his kinsmen. When the rains fell, covering the earth with the glory of leaves and flowers, Kāḷudāyī felt that it was time for the Buddha to visit his kinsmen, and gave him their invitation, singing the season’s beauties in a series of verses. He was declared pre-eminent among those who gladdened the clans AN.i.25 Thag.527–536

The Aṅguttara Nikāya AN.iv.449f. records a conversation between Udāyī and Ānanda. Udāyī asks Ānanda to explain in detail a question which is recorded in the Saṃyutta Nikāya SN.i.48 as having been asked of the Buddha by Pañcālacaṇḍa-devaputta.