مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2995
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn ‘Abbas (رضي الله عنه) that The Messenger of Allah (ﷺ) was treated with cupping, and he gave him his fee.
Musnad Ahmad 3018A saheeh hadeeth]