The Messenger of Allah ﷺ married Maymunah while they were both in the state of ihram.
أخبرني إبراهيم بن يونس بن محمد قال حدثنا أبي قال حدثنا حماد بن سلمة عن حميد عن مجاهد
أن رسول الله ﷺ تزوج ميمونة وهما محرمان
[Sahih] Ahmad narrated it, 245/1, from Yunus bin Muhammad the tutor, with this chain, and it is in Kubra, no. 3822. The hadith has many corroborating narrations from Ibn Abbas with this chain.