It is narrated from Sayyiduna Ibn Amr (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: "The testimony of any treacherous man or woman, and the testimony of an inexperienced person about his brother, is not accepted. Also, the Noble Prophet (peace and blessings be upon him) did not accept the testimony of a servant in favor of his masters, but accepted it in favor of other people."