Musnad Ahmad 32:1767

'Affan narrated to us, Shu'bah narrated to us, Hisham ibn Zayd ibn Anas informed me, he said: I heard Anas say: A woman from the Ansar came to the Prophet, may Allah bless him and grant him peace, with a son of hers. He said: "By the One in Whose hand is my soul, you are indeed the most beloved of people to me," three times.