Musannaf Ibn Abi Shayba 27:320

Abu Usama narrated to us, he said: Ismail informed us, from Qays, who said: Amr said: "And which of the people is most beloved to you, O Messenger of Allah?" He said: "No." He said: "So that we may love whom you love." He said: "The most beloved of the people to me is Aisha." He said: "I am not asking you about the women; I am only asking you about the men." He said: "Her father," and he said another time: "Abu Bakr."