The Prophet ﷺ used to be cupped, and he never withheld anyone's wages unjustly.
حدثنا عبد الرحمن حدثنا سفيان عن عمرو بن عامر قال سمعت
كان النبي ﷺ يحتجم ولم يكن يظلم أحدا أجره
Its isnad is sahih. Amr bin Amir is al-Ansari, and the hadith was narrated by Bukhari, 4/458, no. 2280, Fath, in the Book of Ijarah, on the earnings of the cupper.