Musnad Abu Ya'la al-Mawsili 155:134

Sahl ibn Zanjalah al-Razi narrated to us, al-Walid ibn Muslim narrated to us, al-Awza'i narrated to us, he said: Qurrah narrated to me, he said: al-Zuhri narrated to me, he said: Abu Salamah narrated to me, he said: Abu Hurairah narrated to me, he said: The Messenger of Allah (may Allah bless him and grant him peace) said: "The most beloved of My servants to Me is the one who is most prompt in breaking his fast."