What did the Prophet Muhammad (saw) say whenever he went to answer the call of nature?
 Narrated Anas:                     Whenever the Prophet went to answer the call of nature, he used to say, "Allah-umma inni a`udhu bika minal khubuthi wal khaba'ith i.e. O Allah, I seek Refuge with You from all offensive and wicked things (evil deeds and evil spirits).