Musnad Ahmad 1153:2276

'Abd al-Wahhab narrated to us, from Dawud, from 'Amir, from 'A'ishah, who said: "If the Messenger of Allah, peace and blessings of Allah be upon him, were to conceal anything, he would have concealed this verse: 'And when you said to the one on whom Allah has bestowed favor and you have bestowed favor, "Keep your wife and fear Allah," while you concealed within yourself that which Allah was to disclose.'" [Al-Ahzab: 37]