Sahih al-Bukhari 7051

Abū Ḥāzim said: “Al-Nuʿmān ibn Abī ʿAyyāsh heard me relating this to them and asked, ‘Did you hear it this way from Sahl?’ I said, ‘Yes.’ He said, ‘I also testify, on the authority of Abū Saʿīd al-Khudrī, that I heard him add: “They are from me.” It will be said, “You do not know what they changed after you.” I will say, “Away with those who changed things after me! Away with them!”’”