´It was narrated that Ibn 'Abbas said:` "The Messenger of Allah ruled that in the case of a Mukatab, the Diyah should be (equivalent) to the Diyah for a free man, proportionate to the amount he had paid off (towards buying his freedom)." (Dar'if)
Hadith ReferenceSunan an-Nasa'i / The Book of Oaths (qasamah), Retaliation and Blood Money / Hadith: 4814
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:ضعيف، ضعيف، انظر الحديثين السابقين (4812،4813) انوار الصحيفه، صفحه نمبر 357