Even the oldest works of the Singalese Canon,—which date apparently from the beginning of the second century after Buddha's death, or the fourth century B.C., and which at any rate had their final edition in the third,—frequently mention an opposing sect of ascetics, the Nigaṇṭha, which the northern texts, written in Sanskrit, recognise among the opponents of Buddha, under the name Nirgrantha, whom an old _Sûtra_ [Footnote: The _Mahâparinibbâṇa Sutta_, in _S.B.E_. Vol. XI, p. 106.] describes as "heads of companies of disciples and students, teachers of students, well known, renowned, founders of schools of doctrine, esteemed as good men by the multitude". Their leader is also named; he is called in Pâli Nâtaputta, in Sanskrit Jñâtiputra, that is the son of Jñâti or Nâta. The similarity between these words and the names of the family Jñâti, Jñâta or Naya, to which Vardhamâna belonged is apparent. Now since in older Buddhist literature, the title 'the son of the man of the family N. N.' is very often used instead of the individual's name, as for example, 'the son of the Sâkiya' is put for Buddha-Sâkiyaputta, so that it is difficult not to suppose that Nâtaputta or Jñâtiputra, the leader of the Nigaṇṭha or Nirgrantha sect, is the same person as Vardhamâna, the descendant of the Jñâti family and founder of the Nirgrantha or Jaina sect. If we follow up this idea, and gather together the different remarks of the Buddhists about the opponents of Buddha, then it is apparent that his identity with Vardhamâna is certain. A number of rules of doctrine are ascribed to him, which are also found among the Jainas, and some events in his life, which we have already found in the accounts of the life of Vardhamâna, are related.