Sunan Abi Dawud Book 42, Hadith 72
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.
I said to ‘All (Allah be pleased with him) : Tell me about this march of yours. Is this an order that the Messenger of Allah (May peace be upon him) had given you, or is this your opinion that you have? He said: The Messenger of Allah (May peace be upon him) did not give me any order; but this is an opinion that I have.
Do not distinguish between the Prophets.