Rinsing the mouth and sniffing up water into the nostrils with one handful of water
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ الْجَرَّاحِ، وَأَبُو بَكْرِ بْنُ خَلاَّدٍ الْبَاهِلِيُّ حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ مُحَمَّدٍ، عَنْ زَيْدِ بْنِ أَسْلَمَ، عَنْ عَطَاءِ بْنِ يَسَارٍ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ مَضْمَضَ وَاسْتَنْشَقَ مِنْ غَرْفَةٍ وَاحِدَةٍ .
It was narrated from Ibn 'Abbas that: The Messenger of Allah (ﷺ) rinsed his mouth and sniffed water up into his nostrils from one scoop of water.