Jumay' bin Umayr said: My maternal aunt and I went to Sayyidah Aishah (may Allah be pleased with her), and my maternal aunt asked her: O Mother of the Believers, who was the most beloved of people to the Messenger of Allah (peace and blessings be upon him)? She said: "His daughter Fatimah."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19212