《長部》第二十九經，起因於耆那教領袖尼乾陀若提子去世後其門徒陷入紛爭的消息傳來，佛陀藉此說明這種分裂本是那種教法的性格使然，進而詳述真正圓滿的導師與教法應具備哪些特質，並以如來自身為其典範。

The twenty-ninth discourse of the Dīghanikāya, prompted by news of the death of the Jain leader Nigaṇṭha Nāṭaputta and the ensuing disputes among his followers, in which the Buddha explains why such discord was inevitable given that flawed teaching, then details the qualities of a truly perfect teacher and teaching, exemplified by the Tathāgata himself.