Sahih Muslim 14Q1 — Narration Should Always Be From Trustworthy

And He, exalted be His praise, said: "from among those whom you accept as witnesses", and He, the Mighty and Majestic, said: "and take as witnesses two just men from among you". These verses we have mentioned show that the report of a sinful person is discarded and not accepted, and that the testimony of one who is not upright is rejected. Although a report differs in meaning from testimony in some respects, the two agree in their most important aspects, since the report of a sinful person is not accepted by the scholars, just as his testimony is rejected by all of them.