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. This is a demonstration of his wiping off the water on his body with his hands.
Sunan an-Nasa'i Book 1, Hadith 255
← Previous Hadith "My maternal aunt Maimunah told me: 'I brought the Messenger of Allah (ﷺ) water for his Ghusl from Janabah, and he washed his hands two or three times, then he put his right hand in the vessel and poured water over his private part, then he washed it with his left hand. Then he put his left hand on the ground and rubbed it hard. Then he performed Wudu' as for prayer,then poured three scoops with his two hands full of water over his head, then he washed his entire body, then he moved away from where he had been standing and washed his feet.' She said: 'Then I brought him a towel but he refused it.'"

Sunan an-Nasa'i Book 1, Hadith 254 Next Hadith → "If the Prophet (ﷺ)" - (one of the narrators) 'Amr said: "If the Messenger of Allah (ﷺ)" - "wanted to eat or sleep while he was Junub, he would perform Wudu'." In his narration, 'Amr (one of the narrators) added: "Wudu' was for prayer."

Sunan an-Nasa'i Book 1, Hadith 256