Mukhtasar Bukhari (Abridged) 605 — If one sleeps and misses prayer

Narrated Abdullah bin Mas'ud (may Allah be pleased with him): A man was mentioned before the Prophet (peace and blessings of Allah be upon him) and it was said that he sleeps till morning and does not get up for (Tahajjud) prayer. The Prophet (peace and blessings of Allah be upon him) said: "Satan urinates in his ears."