Sahih al-Bukhari 6935
Sahih al-Bukhari · Book 88: Apostates · “The Hour will not be established till two groups fight against each other, their claim being one and the same.”
Narrated Abu Huraira:
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 " .
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."