Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
tabarani:11699ʿAbdān b. Aḥmad > Zayd b. al-Ḥarīsh > Ibn ʿUyaynah > Ḥuṣayn > ʿIkrimah > Ibn ʿAbbās

[Machine] "There is no harm in cupping for the fasting person, it is only disliked because it may weaken them."  

الطبراني:١١٦٩٩حَدَّثَنَا عَبْدَانُ بْنُ أَحْمَدَ ثنا زَيْدُ بْنُ الْحَرِيشِ عَنِ ابْنِ عُيَيْنَةَ عَنْ حُصَيْنٍ عَنْ عِكْرِمَةَ عَنِ ابْنِ عَبَّاسٍ قَالَ

«لَا بَأْسَ بِالْحِجَامَةِ لِلصَّائِمِ إِنَّمَا كُرِهَ مِنْ أَجْلِ الضَّعْفِ»