Musannaf Ibn Abi Shayba 33:800

Abu Mu'awiyah narrated to us, from al-A'mash, from Abu Salih, from Abu Hurayrah, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "For me to say 'Subhan Allah' (Glory be to Allah), 'al-Hamdulillah' (Praise be to Allah), 'la ilaha illa Allah' (there is no god but Allah), and 'Allahu Akbar' (Allah is the Greatest) is more beloved to me than that upon which the sun has risen."