كتاب الطهارة
1  
The Book of Purification
(72)
Chapter: The Command To Blow (Water From The Nose)
(72)
باب الأَمْرِ بِالاِسْتِنْثَارِ ‏‏
Sunan an-Nasa'i 89
It was narrated from Salamah bin Qais that the Messenger of Allah (ﷺ) said:
"When you perform Wudu', sniff water in your nose and blow it out, and when you use small stones (to remove filth), then make it off (numbered)."
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا حَمَّادٌ، عَنْ مَنْصُورٍ، عَنْ هِلاَلِ بْنِ يِسَافٍ، عَنْ سَلَمَةَ بْنِ قَيْسٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏ "‏ إِذَا تَوَضَّأْتَ فَاسْتَنْثِرْ وَإِذَا اسْتَجْمَرْتَ فَأَوْتِرْ ‏"‏ ‏.‏
Grade: Sahih (Darussalam)
Reference : Sunan an-Nasa'i 89
In-book reference : Book 1, Hadith 89
English translation : Vol. 1, Book 1, Hadith 89