Abu Hurairah reported: The Messenger of Allah ﷺ said: When any of you performs ablution, he should snuff up water in his nose and eject mucus.
Related hadith on this topic
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues:
Putting water into the nose and cleaning it is among the obligations (wajibat) of ablution (wudu).
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 140
Shaykh Dr. Abdur Rahman Freywai
1:
Both Hammam ibn Yahya and Amir al-Ahwal used to become confused,
so it is possible that in this narration, one of them became confused and narrated "three" instead of "two."
However, from Abu Hurairah (radi Allahu anhu), there is a similar narration in Ibn Majah (no. 415) through another (weak) chain.
Source: Sunan al-Tirmidhi – Majlis ‘Ilmi Dar al-Da‘wah, New Delhi Edition, Page: 43