Musnad Ahmad 32:365

Muhammad ibn Ja'far and 'Affan narrated to us, they said: Shu'bah narrated to us, from Hisham. 'Affan said: Hisham ibn Zayd ibn Anas informed me, he said: I heard Anas ibn Malik saying: A woman from the Ansar came to the Messenger of Allah, may Allah bless him and grant him peace—'Affan said: with a son of hers—and he said: "By the One in Whose hand is my soul"—and Ibn Ja'far said: He said: So the Messenger of Allah, may Allah bless him and grant him peace, went aside with her and said: "By the One in Whose hand is my soul, you are indeed the most beloved of people to me," three times.