The Messenger of Allah ﷺ said, "The Hour will not come until two great factions fight one another, and there is a great slaughter between them, though the claim of both is one and the same."
وقال رسول الله ﷺ لا تقوم الساعة حتى تقتتل فئتان عظيمتان يكون بينهما مقتلة عظيمة ودعواهما واحدة
This hadith is also sahih, and it appears in the Individual Manuscript under number 23. Bukhari related it [4:200 print/454 Fath], this hadith and the one following it being a single hadith, through the route of the Manuscript. Muslim also related it [8:170 print/2, 362 Bulaq], individually, through the route of the Manuscript. Bukhari related it [13:72–78 Fath] from the copy of Araj, combining it with the hadith that follows it, along with the two preceding hadiths 8120 and 8120m, and other hadiths.