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 《佛遗教经》
Śākyamuni Buddha
The Sūtra Of The Buddha’s Bequeathed Teachings