Musannaf Ibn Abi Shaybah 24015 — A mukatab slave who brings all

It is narrated from Abu Bakr bin Amr bin Hazm that a man made his slave a mukatab and stipulated that he pay the contract sum in instalments. The mukatab came with his entire contract sum, but his master refused to receive it all at once. The mukatab came to Sayyiduna Umar (may Allah be pleased with him), who sent for his master. When he came, he offered him all that money, but he refused to accept it. Sayyiduna Umar said: "O Yarfa', put this money in the public treasury (Bayt al-Mal)." And he said to the master: "Keep collecting it from the public treasury in instalments." And he said to the slave: "Go, you are free."