Sayyiduna Jubayr bin Mut'im (may Allah be pleased with him) narrated that the Prophet (peace and blessings be upon him) said regarding the captives of Badr: "If al-Mut'im bin Adi were alive and spoke to me about these foul people, I would have let them go for his sake."
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 1491