مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 2982
Business Transactions
Wages - Section 1
وَعَنِ ابْنِ عَبَّاسٍ: أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ احْتَجَمَ فَأَعْطَى الْحَجَّامَ أجره واستعط
Ibn ‘Abbas said the Prophet (ﷺ) had himself cupped and gave the cupper his pay; and he poured medicine into his nose. (Bukhari and Muslim.)
Mishkat al-Masabih, 2982مُتَّفَقٌ عَلَيْهِ (الألباني)