مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2577
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn 'Abbas (رضي الله عنه) that He did not see anything wrong with a man getting married whilst in ihram, and he said: The Prophet of Allah (ﷺ) married Maimoonah bint al-Harith at an oasis called Sarif when he was in Isram. When the Prophet of Allah (ﷺ) completed his Hajj, when he came to that oasis, he consummated his marriage with hег.
Musnad Ahmad 2592Its isnad is saheeh]