Sayyidah Aishah al-Siddiqah (may Allah be pleased with her) narrates: The Prophet (peace and blessings be upon him) had himself cupped while in a state of ihram.
Al-Bazzar recorded it, and its chain is hasan (good).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الحج / 5423