The Prophet ﷺ set the blood-money at twelve thousand. He said that this is referenced in Allah's statement, "And they resented nothing except that Allah and His Messenger had enriched them from His bounty" [Tawbah 9:74], meaning by their receiving the blood-money.
حدثنا العباس بن جعفر حدثنا محمد بن سنان حدثنا محمد بن مسلم عن عمرو بن دينار عن عكرمة
عن النبي ﷺ جعل الدية اثني عشر ألفا قال وذلك قوله {وما نقموا إلا أن أغناهم الله ورسوله من فضله} قال بأخذهم الدية