A younger brother of Dhammāsoka and a lay pupil of Giridatta Thera. One day he saw grey hairs on his head as he was being dressed and, seated as he was, he became a Stream-winner. Later he entered the Order and became an Arahant.

In the time of Siddhattha Buddha he was a brahmin, skilled in various branches of learning, and later became an ascetic. On his way to see the Buddha he died, and was reborn in the deva world. (ThagA.i.295 f; two verses attributed to him are given in Thag.169-70). He is probably identical with Buddhasaññaka Thera of the Apadāna. Ap.ii.419 f; cf. Dvy.366 f.