Sahih Muslim — Hadith #7581

Narrated by Ibn Abbas (may Allah be pleased with him): “Busayr bin Ka’b came to Ibn Abbas and began to relate hadiths to him. Ibn Abbas said to him, ‘Go back to such-and-such hadith.’ Bushayr went back and related it. Then Ibn Abbas said to him again, ‘Go back to such-and-such hadith.’ Bushayr went back again and related it. Then Bushayr said to him, ‘I don’t know if you know all my hadiths and reject this one and that one, or if you reject all my hadiths and only know this one and that one?’” Ibn Abbas replied, “We used to receive hadiths from the Messenger of Allah (peace and blessings be upon him) at a time when no one lied about him. But when people started mixing dubious and authentic narrations, we stopped listening to their hadiths.”