ジャイナ教の指導者ニガンタ・ナータプッタの死と、それに続く弟子たちの間の争いの知らせを機に説かれた『長部』第二十九経で、仏陀は欠陥ある教えゆえにそのような不和が避けられなかった理由を説明し、次いで真に完全な師と教えの資質を、如来自身を例に詳述する。

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.