Karayb bin Abi Muslim كريب بن أبي مسلم الهاشمي · The Book of Purification

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.

"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."