Sayyidah Aishah (may Allah be pleased with her) said: "If the Messenger of Allah (peace and blessings be upon him) had concealed anything of the revelation, he would have concealed this verse: 'And you concealed within yourself what Allah was to disclose, and you feared the people, while Allah has more right that you fear Him. So when Zayd had accomplished his need of her, We married her to you.'" [Surah al-Ahzab: 37]
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20482