It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that a man came to the Noble Prophet (peace and blessings be upon him) and said, "Indeed, so-and-so slept through the night and did not pray." The Messenger of Allah (peace and blessings be upon him) said: "Satan has urinated in that man's ear or both his ears (that is why he remained in a deep sleep until morning)." These are the words of Abu Musa's hadith.