The Prophet ﷺ decreed that each clan was responsible for paying the blood-money owed by its members, then he wrote, "It is not lawful for a Muslim to take as patron the freed slave of another Muslim without his permission." I was later informed that in his document he cursed anyone who did so.
كتب النبي ﷺ على كل بطن عقولهم ثم كتب: أن لا يحل لمسلم أن يتوالى مولى رجل مسلم بغير إذنه ثم أخبرت أنه لعن في صحيفته من فعل ذلك.
Muslim narrated it in the Book of Manumission (1507), from Muhammad bin Rafi, who said, Abdul-Razzaq narrated to us, Ibn Jurayj informed us, Abu Zubayr informed me that he heard Jabir bin Abdullah, and he related it.His statement, "he is cursed in his record, whoever does that," refers to the hadith of Ali bin Abu Talib recorded in the Sahihayn, "Whoever claims descent from someone other than his father, or attaches himself to a patron other than his own, upon him is the curse of Allah, the angels, and all the people."As for what has been narrated from Amr bin Shuayb, from his father, from his grandfather, that the Prophet ﷺ wrote a document between the emigrants and the helpers, "that they should bear their blood-money obligations among themselves, and that they should ransom their captives fairly, and that there should be reconciliation among the Muslims," this is daif.Imam Ahmad narrated it (2443) from Siraj, who said, Abbad narrated to us, from Hajjaj, from Amr bin Shuayb, from his father, from his grandfather, and he related it. He also narrated it (6904) from Nasr bin Bab, from Hajjaj with his chain, similarly. He also narrated it (2444) from Siraj, who said, Abbad narrated to us, from Hajjaj, from Hakam, from Miqsam, from Ibn Abbas, similarly.Hajjaj here is Ibn Artah, a mudallis who narrated using anah (ambiguous transmission wording). Ibn Kathir said, Imam Ahmad alone narrated it. Al-Bidayah wal-Nihayah (4/555).His statement "that they should bear their blood-money obligations among themselves" the maaqil are the blood-money payments, the plural of maqilah, meaning that the bond of brotherhood between the emigrants and the helpers was such that the helpers would bear the blood-money obligations of the emigrants, and vice versa.His statement, "that they should ransom their captives," means their prisoners, for al-aani means the captive.