Ibn `Abbas added:The Prophet married Maimuna during the `Umrat-al-Qada' (i.e. the `Umra performed in lieu of the `Umra which the Prophet (ﷺ) could not perform because the pagans, prevented him to perform that `Umra).
وَزَادَ ابْنُ إِسْحَاقَ حَدَّثَنِي ابْنُ أَبِي نَجِيحٍ، وَأَبَانُ بْنُ صَالِحٍ، عَنْ عَطَاءٍ، وَمُجَاهِدٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ تَزَوَّجَ النَّبِيُّ صلى الله عليه وسلم مَيْمُونَةَ فِي عُمْرَةِ الْقَضَاءِ.
Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi) • Hadith 293