Companions of the Prophet

Bukhari :: Book 5 :: Volume 57 :: Hadith 116

Narrated Abu Wail:

When 'Ali sent 'Ammar and Al-Hasan to (the people of) Kufa to urge them to fight, 'Ammar addressed them saying, "I know that she (i.e. 'Aisha) is the wife of the Prophet in this world and in the Hereafter (world to come), but Allah has put you to test, whether you will follow Him (i.e. Allah) or her."