Sunan Abi Dawud 4686
سنن أبي داود#4686SahihIbn ‘Umar reported the Prophet (May peace be upon him) as saying :Do not turn unbelievers after me ; one of you may strike the neck of the other
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
Zubair Ali ZaiSahih Bukhari (6868) Sahih Muslim (66)
In-book reference: 42:91