Al-Lu'lu Wal-Marjan 1477 — The Book of Virtues and Merits (of the Prophet ﷺ and other Prophets ﷺ)

Abu Sa'id al-Khudri Narrated from:

Narrated Abû Sa'îd Al-Khudrî رضي الله عنه (the same as Hadith No. 1476) and added that the Prophet صلى الله عليه وسلم said, "I will say: They are of me (i.e. my followers)." It will be said, "You do not know what they innovated (new things) in the religion after you (left)." Then I will say, "Far removed, far removed (from mercy), those who changed (their religion) after me." ( Sahîh Al-Bukhârî, Hadîth No. 585, Vol. 8)