ENOfficial
It was narrated from Ibn 'Abbas that the Prophet (ﷺ) performed Ghusl and a cloth was brought to him, but he did not touch it, and he started doing like this with the water. [1] [1] This is a demonstration of his wiping off the water on his body with his hands.
Source: sunnah.com
Other translations
Arabic
أَخْبَرَنَا مُحَمَّدُ بْنُ يَحْيَى بْنِ أَيُّوبَ بْنِ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ إِدْرِيسَ، عَنِ الأَعْمَشِ، عَنْ سَالِمٍ، عَنْ كُرَيْبٍ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم اغْتَسَلَ فَأُتِيَ بِمِنْدِيلٍ فَلَمْ يَمَسَّهُ وَجَعَلَ يَقُولُ بِالْمَاءِ هَكَذَا .
sunnah.com