Sayyiduna Jabir (may Allah be pleased with him) narrates: When the Messenger of Allah (peace and blessings be upon him) removed the cloth from Hamzah's body, he wept, and when he saw how he had been mutilated, he began to sob.
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 2919