梵網經古迹記 2.136

2.136

述曰：日日誦持，明解為師。懈怠不明，此戒所制。言「即為自欺誑亦欺他人」者，自作後法，大衰損故，言自欺誑。授虛妄教，無利勤苦，言亦欺他。《菩薩地》云：詐現威儀，菩薩相似功德攝故。此雖妄語，詐作師義，犯輕垢罪。

Commentary: Reciting and upholding them daily, and understanding them clearly, one acts as a teacher. Being indolent and lacking clear understanding is prohibited by this precept. When it says 'this is self-deception as well as deceiving others', [it means that] one creates future downfalls for oneself and suffers great deterioration, hence it is called 'self-deception'; conferring false teachings causing futile toil and suffering without benefit, hence it is called 'deceiving others'. The Bodhisattvabhūmi says: 'Falsely displaying deportment is subsumed under a bodhisattva's counterfeit virtues.' Although this is lying, it constitutes acting falsely as a teacher, and thus incurs a duṣkṛta offense.