It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said to Sayyiduna Ali (may Allah be pleased with him): "Who was the most wretched of the people of Thamud?" He said: "The one who hamstrung the she-camel." He (peace and blessings be upon him) said: "Then who will be the most wretched of this Ummah?" He said: "Allah knows best." He (peace and blessings be upon him) said: "Your killer."
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 2024