مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3092
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
Abush-Sha'tha' narrated that Ibn ‘Abbas (رضي الله عنه) told him that The Prophet (ﷺ) married Maimoonah when he was in ihram.
Musnad Ahmad 3116Its isnad is saheeh, al-Bukhari (1837) and Muslim (1410)]