Sunan Ibn Majah 403
سنن ابن ماجه#403SahihIt was narrated from Ibn 'Abbas that:The Messenger of Allah rinsed his mouth and sniffed water up into his nostrils from one scoop of water
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari
In-book reference: 1:137