Sirach 19:15

15 Admonish a friend: for many times it is a slander, and believe not every tale.

Sirach 19:15 In-Context

13 Admonish a friend, it may be he hath not done it: and if he have done it, that he do it no more.
14 Admonish thy friend, it may be he hath not said it: and if he have, that he speak it not again.
15 Admonish a friend: for many times it is a slander, and believe not every tale.
16 There is one that slippeth in his speech, but not from his heart; and who is he that hath not offended with his tongue?
17 Admonish thy neighbour before thou threaten him; and not being angry, give place to the law of the most High.

The Brenton translation of the Septuagint is in the public domain.