Musannaf Ibn Abi Shayba 21:301

Ghundar narrated to us, from Shu'bah, from Mansur, from Hilal ibn Yasaf, from Abu 'Ubaydah, from 'Abdullah, who said: "For me to say 'Subhan Allah' (Glory be to Allah), 'Alhamdulillah' (Praise be to Allah), 'La ilaha illallah' (There is no god but Allah), and 'Allahu Akbar' (Allah is the Greatest) is more beloved to me than to give in charity their number in dinars."