(8) باب الإِيتَارِ فِي الاِسْتِنْثَارِ وَالاِسْتِجْمَارِ
Hammam b. Munabbih reported:
This is what Abu Huraira transmitted to us from Muhammad, the Messenger of Allah (ﷺ), and he mentioned a number of a hadith, of which this is one: that the Messenger of Allah (ﷺ) said: When anyone amongst you (performs ablution) he must snuff his nostrils with water and then clean them.
Reference: Sahih Muslim 237b
In-book reference: Book 2, Hadith 28
USC-MSA web (English) reference(deprecated numbering scheme): Book 2, Hadith 459