汝等比丘，谄曲之心与道相违。是故宜应质直其心。
You and other Bhikṣus, should know that the mind of flattery, with the path, contradict each other. Therefore, there should be straightforwardness of your minds.
当知谄曲，但为欺诳，入道之人，则无是处。是故汝等，宜当端心，以质直心为本。
You should know that as flattery, is only for cheating and deception, of people entering the path, then is it without this having a part. Therefore, you and others, should have the upright mind, with the straightforward mind as the root.
释迦牟尼佛
Śākyamuni Buddha
《佛遗教经》
The Sūtra Of The Buddha’s Bequeathed Teachings
