It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with him) that "The Messenger of Allah (peace and blessings be upon him) married while in the state of ihram, and had himself cupped (hijamah) while in the state of ihram."
Hadith Referenceمسند أبي يعلى الموصلي / أول مسند ابن عباس / 2726