Sayyiduna al-Hakam bin Umayr and Sayyiduna A'idh bin Qurt (may Allah be pleased with them both) said: The Messenger of Allah (peace and blessings be upon him) said: "Do not mutilate (by cutting off limbs) any creature of Allah, the Mighty and Majestic, that has a soul."
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 3175