Seventy Three (73) Sects

The Messenger of Allah (may Allah bless him and grant him peace) said,

“The Banu Isra’il split into seventy-two sects. My Ummah will split into seventy-three. All of them will be in the Fire except for one.” the companions asked, “Who are they, Messenger of Allah?”

He SalAllaho Alaihi Wasallam replied, “Those who base themselves on what I and my Companions are doing today.”
( At-Tirmidhi)