Musannaf Ibn Abi Shaybah 30093 — A slave who falsely accuses a free

Ikrimah, who is the freed slave of Sayyiduna Ibn Abbas (may Allah be pleased with them both), said that it is reported from Sayyiduna Ibn Abbas (may Allah be pleased with them both) concerning a slave who slandered a free person. He said: He is to be given forty lashes.