مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2221
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn ‘Abbas that the Messenger of Allah (ﷺ) was treated with cupping when he was fasting and in ihram, and he fainted. Based on that, he said: This is why cupping is disliked for one who is fasting.
Musnad Ahmad 2228Its isnad is da'eef, Nasr bin Bab is da’eef]