法苑珠林 24.12

24.12

The pure speaker also has five matters: first, first giving food and only then speaking; second, speaking to increase the Three Jewels; third, speaking to sever afflictions in oneself and others; fourth, speaking to distinguish the heterodox from the orthodox; fifth, speaking so that listeners attain the supreme. Good sons, an impure preacher of the Dharma is called defiled, is called a seller of the Dharma, is also called a polluter, is also called an erroneous speaker, and is also called one who has lost their mind. (The pure speaker is simply the reverse of the above.)