Musnad Ahmad 32:268

Waki’ narrated to us, from ‘Abd al-‘Aziz—meaning al-Majishun—from Sadaqah ibn Yasar, from al-Numayri, from Anas ibn Malik, who said: The Messenger of Allah (ﷺ) said: "Indeed, the Children of Israel split into seventy-two sects, and you will split into the like of them; all of them are in the Fire except for one sect."