Musannaf Ibn Abi Shaybah 31056 — Book of the Judgments

Sayyiduna al-Mughirah bin Shu'bah (may Allah be pleased with him) said: I was present with the Messenger of Allah (peace and blessings be upon him) when he ruled, in a dispute over a miscarriage, for a male or female slave. Sayyiduna Umar (may Allah be pleased with him) said: "Bring someone who will testify in your support." So Sayyiduna Muhammad bin Maslamah (may Allah be pleased with him) testified in his support.