Chapter: Odd numbers when rinsing the nose and cleaning oneself with pebbles (istijmar)
Abu Huraira reported Allah's Apostle ( صلی اللہ علیہ وسلم ) 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.
Authentic