Thera of Tambapapidīpa (Sri Lanka), perhaps to be identified with (6) above. He and his colleague, Phussadeva, are often mentioned as being expert exponents of the Vinaya. Upatissa had two pupils, Mahāpaduma and Mahāsumma, who became very famous as experts in the Vinaya (vinayadharā). Mahāpaduma “read” through the Vinaya eighteen times with his teacher, and Mahāsumma nine times (Sp.i.263 f). Buddhaghosa evidently regarded with great respect the explanations of various Vinaya questions as given by Upatissa, for he often quotes him. See, e.g., Sp.ii.456; iii.624, 714; iv.890.