The Prophet ﷺ was cupped by a slave belonging to the Banu Bayadah. The Prophet ﷺ gave him his wages and spoke to his master, who then reduced the amount the slave had to pay him. Had it been unlawful earnings, the Prophet ﷺ would not have given it to him.
حدثنا إسحق بن إبراهيم وعبد بن حميد واللفظ لعبد قالا أخبرنا عبد الرزاق أخبرنا معمر عن عاصم عن الشعبي
حجم النبي ﷺ عبد لبني بياضة فأعطاه النبي ﷺ أجره وكلم سيده فخفف عنه من ضريبته ولو كان سحتا لم يعطه النبي ﷺ