Sayyiduna Awf bin Malik (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "The Jews split into seventy-one sects, and the Christians split into seventy-two sects. By the One in whose Hand is my soul, my Ummah will split into seventy-three sects: one will be in Paradise and seventy-two in Hell." It was said: O Messenger of Allah, which sect is that? He (peace and blessings be upon him) said: "The Jama'ah (the main body)."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15220