It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that he used to get cupped while fasting, then he abandoned it, so when he was fasting he would not get cupped until he broke his fast.

It is narrated from Ibn Shihab that Sayyiduna Sa'd bin Abi Waqqas (may Allah be pleased with him) and Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) used to get cupped while fasting.

Hazrat Urwah bin Zubair used to have cupping done while fasting, and then he would not break his fast. Hisham said: I have never seen Hazrat Urwah having cupping done except that he was fasting.

Imam Malik, may Allah have mercy on him, said: Cupping is not disliked for the fasting person except out of fear that he may become weak, and if there is no fear of weakness, then it is not disliked. So if a person has cupping done in Ramadan, and then manages to avoid breaking his fast, then nothing is required of him, nor is he obliged to make up that day, because cupping is disliked only when there is fear of breaking the fast. So if he has cupping done and avoids breaking his fast until evening comes, then nothing is required of him, nor is he obliged to make up that day.