Sahih al-Bukhari, Hadith 6582 ⓘ
Narrated Anas: The Prophet said, "Some of my companions will come to me at my Lake Fount, and after I recognize them, they will then be taken away from me, whereupon I will say, 'My companions!' Then it will be said, 'You do not know what they innovated (new things) in the religion after you."
حَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا وُهَيْبٌ، حَدَّثَنَا عَبْدُ الْعَزِيزِ، عَنْ أَنَسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " لَيَرِدَنَّ عَلَىَّ نَاسٌ مِنْ أَصْحَابِي الْحَوْضَ، حَتَّى عَرَفْتُهُمُ اخْتُلِجُوا دُونِي، فَأَقُولُ أَصْحَابِي. فَيَقُولُ لاَ تَدْرِي مَا أَحْدَثُوا بَعْدَكَ " .
also referenced under: Book 81, Hadith 170 (In-Book) & Volume 8, Book 76, Hadith 584 (USC-MSA)