Musnad Ahmad 30:2650

Waki’ narrated to us, Al-A’mash narrated to us, he said: I think Abu Salih [narrated] from Abu Hurairah, he said: A man came to the Prophet, peace and blessings of Allah be upon him, and said: "Indeed, such-and-such a person prays at night, but when morning comes, he steals." He said: "What you say will soon forbid him."