‏الطهارة : Hadeeth No:458 Abu Huraira reported Allaah's Prophet (sallAllaahu alayhi wa sallam) as saying: When anyone wipes himself with pebbles (after answering the call of nature) he must make use of an odd number and when any one of you performs ablution he must snuff in his nose water and then clean it....

‏صفة القيامة والجنة والنار‏ : Hadeeth No:6737 Anas b. Malik reported that a person said: Allaah's Messenger, how the non-believers would be made to assemble on the Day of Resurrection (by crawling) on their faces? Thereupon he said: Is He Who is powerfnl to make them walk on their feet is not powerful enough to make them (crawl) upon their face...