Musannaf Ibn Abi Shaybah 35470 — Ransom: those who approved of it

It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) wrote to the Muhajirun and the Ansar that they should pay blood money in their cases of killing, that they should pay the ransom of their captives in a fair manner, and that (matters) among the Muslims should be set right.