مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2180
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 in al-Qahah, when he was fasting.
Musnad Ahmad 2186Its isnad is saheeh]