Sahih al-Bukhari 6935

Arabic

حَدَّثَنَا عَلِيٌّ، حَدَّثَنَا سُفْيَانُ، حَدَّثَنَا أَبُو الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏ "‏ لاَ تَقُومُ السَّاعَةُ حَتَّى تَقْتَتِلَ فِئَتَانِ دَعْوَاهُمَا وَاحِدَةٌ ‏"‏‏.‏

English translation

Narrated Abu Huraira:Allah's Messenger (ﷺ) said, "The Hour will not be established till two (huge) groups fight against each other, their claim being one and the same

Reference: Sahih al-Bukhari 6935, Book of Apostates. English translation by Dr. Muhammad Muhsin Khan.