مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1568
Musnad Abu Ishaq Sa'd bin Abi Waqqas
Ghunaim narrated: I asked Sa"d bin Abi Waqqas about tamattu ," [in Hajj. He said: We did that when this one was still a disbeliever living in Makkah - referring to Mu"awiyah.
Musnad Ahmad 1568Sahih (Darussalam) [ Muslim (1225)]