The Messenger of Allah (ﷺ) got him self cupped and gave the cupper his wages. Had he considered it impure, he would not have given it (wage) to him.
Sunan Abi Dawud Book 24, Hadith 8
← Previous Hadith Muhayyisah asked permission of the Messenger of Allah (ﷺ) regarding hire of the cupper, but he forbade him. He kept on asking his permission, and at last he said to him: Feed your watering camel with it and feed your slave with it.

Sunan Abi Dawud Book 24, Hadith 7 Next Hadith → That Abu Tibah cupped the Messenger of Allah (ﷺ) and he ordered that a sa' of dates be given to him, also ordering his people to remit some of his dues.

Sunan Abi Dawud Book 24, Hadith 9