Muhammad bin Jubayr narrates from his father (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said about the captives of Badr: "If Mut'im bin Adi were alive and had spoken to me about these filthy ones, I would have set them free."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 12837