Sunan Abi Dawud 4667
سنن أبي داود#4667SahihAbu Sa’id reported the Messenger of Allah (May peace be upon him) as saying:In the event of the dissension among Muslims an emerging sect will emerge ; one of the two parties that is nearer to the truth will kill it
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Muslim (1065)
In-book reference: 42:72