Musannaf Ibn Abi Shaybah 30998 — Book of the Judgments

Sayyiduna al-Miswar (may Allah be pleased with him) says that Sayyiduna Umar (may Allah be pleased with him) was consulting the people about a woman whose pregnancy someone had caused to miscarry. 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), and he (peace and blessings be upon him) gave judgment in such a matter for a male or female slave." Sayyiduna Umar said: "Bring someone who will testify to this along with you." So Sayyiduna Muhammad bin Maslamah (may Allah be pleased with him) testified in his favour.