Sunan an-Nasa'i 88
سنن النسائي#88SahihIt was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said:"Whoever performs Wudu' then let him sniff water in the nose and blow it out, and whoever uses small stones (to remove filth) then make it odd (numbered)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 1:88