"When any one of you performs Wudu', let him put water in his nose then blow it out."
Sunan an-Nasa'i Book 1, Hadith 86
← Previous Hadith "I saw the Messenger of Allah (ﷺ) performing Wudu' like I have just done." Then he said: "Whoever performs Wudu' as I have done, then stands and prays two Rak'ahs without letting his thoughts wander, his previous sins will be forgiven.'"

Sunan an-Nasa'i Book 1, Hadith 85 Next Hadith → "I said: 'O Messenger of Allah, tell me about Wudu." He said: 'Perform Wudu' well, and exxagerate in sniffing water up into your nose, except when you are fasting.'"

See No. 141

Sunan an-Nasa'i Book 1, Hadith 87