‘Ā'ishah (may Allah be pleased with her) reported: The Messenger of Allah (may Allah's peace and blessings be upon him) said: "O ‘Ā'ish, this is Jibrīl greeting you with peace." I said: "May the peace, mercy, and blessings of Allah be upon him. You see what I can not see," referring to the Messenger of Allah (may Allah's peace and blessings be upon him). Authentic hadith - Narrated by Bukhari & Muslim