Buddhist Dictionary of Pali Proper Names by G P Malalasekera
Sonakāyana
Sonakāyana:A youth who,according to Sikhā Moggallāna,went about saying that the Buddha proclaimed the ineffectiveness of all deeds,and thereby preached the annihilation of the world.The Buddha said he did not know Sonakāyana,even by sight.A.ii.232.