Musannaf Ibn Abi Shaybah

It is narrated from Hazrat Talha bin Abdullah bin Awf that the Noble Prophet (peace and blessings be upon him) ordered the announcer to make a proclamation. He called out to the people until he reached the Thaniyyah. The Prophet (peace and blessings be upon him) said: "O people! Be aware that the testimony of an opponent and a suspicious person is not acceptable, and indeed, the oath is upon the defendant."