Musnad Ahmad 32:354

Abu Sa’id, the freed slave of Banu Hashim, narrated to us, Salam Abu al-Mundhir al-Qari’ narrated to us, Thabit narrated to us, from Anas, who said: The Messenger of Allah, peace and blessings of Allah be upon him, said: "There have been made beloved to me from the world: women and perfume, and the coolness of my eyes has been placed in prayer."