The testimony of a treacherous man is not acceptable nor a treacherous woman nor a man lashed for the Hadd nor a woman lashed nor one possessing malice of enmity nor a rehearsed witness nor the Qani of (one contracted by)the family on their behalf nor the one associating himself to other than his Wala or to other than his relatives."
Jami` at-Tirmidhi Book 35, Hadith 4
← Previous Hadith "The best of witnesses is the one who gives his testimony before being asked for it."

Jami` at-Tirmidhi Book 35, Hadith 3 Next Hadith → "O you people False witness is tantamount to Shirk with Allah" Then the Messenger of Allah (s.a.w)recited: So shun the Rijs of the idols, and shun false speech.

Jami` at-Tirmidhi Book 35, Hadith 5