The Book of Purification (Kitab Al-Taharah)

Muslim :: Book 2 : Hadith 460

Abu Huraira reported: The Messenger of Allah (way peace he upon him) said: When anyone performs ablution he must clean his nose and when anyone wipes himself with pebbles (after answering the call of nature) he must do that odd number of times.

Source materials are from the University of Southern California MSA site
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