Narrated 'Abdullah (Radi-Allahu 'anhum): A person was mentioned before the Prophet (Sallallahu 'Alaihi Wa Sallam)and he was told that he had kept on sleeping till morning and had not got up for the prayer. The Prophet (Sallallahu 'Alaihi Wa Sallam) said, "Satan urinated in his ears."

[Bukhari Vol. 2 : No. 245]