Musannaf Ibn Abi Shaybah 21355 — Manumission contracts paid in young

Abdullah bin Abi Bakr bin Anas said: This is the mukatabah contract of Sirin, which we have with us. This is what Sayyiduna Anas bin Malik (may Allah be pleased with him) contracted with his slave: he made him a mukatab in exchange for such and such thousand and two slaves who do work like his.