Hadith: The Shaitan spends the night on his nose.

Bismillahirrahmanirrahim 

Hadith:  The Shaitan spends the night on his nose.

It was narrated from Abu Hurairah Radi-Allahu-Anhu  that the Messenger of Allah Peace be upon him said:  When any of  you wakes from sleep then let him sniff water in his nose and blow it out three  times, for the Shaitan spends the night on his nose.

Sunan Nasaii, Vol1, #90-Sahih