ENOfficial
‘Abdallah b. Zaid said that he saw God’s messenger rinse his mouth and snuff up water from one hand, doing that three times. Abu Dawud and Tirmidhi transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَن عبد الله بن زيد قَالَ: رَأَيْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ مَضْمَضَ وَاسْتَنْشَقَ مِنْ كَفٍّ وَاحِدَةٍ فَعَلَ ذَلِك ثَلَاثًا. رَوَاهُ أَبُو دَاوُد وَالتِّرْمِذِيّ
sunnah.com