Buddhist Dictionary of Pali Proper Names by G P Malalasekera
Pokkharanī Sutta
Pokkharanī Sutta:The ill which remains to an Ariyan disciple who has won insight compared to the ill which he has destroyed,is as the water taken up by the tip of a blade of grass compared to the water left behind in a tank fifty yojanas in length,breadth and depth.S.ii.134; S.v.460.