مسند أحمد

It was narrated that Qatadah said. `Abdullah bin Shaqeeq said: `Uthman used to forbid mut’ah (of Hajj, i.e., tamattu`) and ‘Ali used to enjoin it. `Uthman said something to `Ali, then `Ali said: You know that we did tamattu` with the Messenger of Allah (ﷺ) . He said: Yes, but we were in a state of fear then.