Musannaf Ibn Abi Shaybah 21351 — Manumission contracts paid in young

Ikrimah bin Khalid al-Makhzumi said: A man made his slave a mukatab in exchange for two slaves who practise the same craft as his. The two of them brought their case to Sayyiduna Umar (may Allah be pleased with him). He gave this judgement: If he does not bring you two slaves who practise the same craft as his, return him to slavery.