كتاب الجنة وصفة نعيمها وأهلها
53
The Book of Paradise, its Description, its Bounties and its Inhabitants
(6)
Chapter: The First Group To Enter Paradise Will Look Like The Moon When It Is Full; Their Attributes And Their Spouses
(6)
بَاب أَوَّلُ زُمْرَةٍ تَدْخُلُ الْجَنَّةَ عَلَى صُورَةِ الْقَمَرِ لَيْلَةَ الْبَدْرِ وَصِفَاتُهُمْ وَأَزْوَاجُهُمْ

Muhammad reported that some (persons) stated with a sense of pride and some discussed whether there would be more men in Paradise or more women. It was upon this that Abu Huraira reported that Abu'l Qasim (the Holy Prophet) (ﷺ) said:

The (members) of the first group to get into Paradise would have their faces as bright as full moon during the night, and the next to this group would have their faces as bright as the shining stars in the sky, and every person would have two wives and the marrow of their shanks would glimmer beneath the flesh and there would be none without a wife in Paradise.
حَدَّثَنِي عَمْرٌو النَّاقِدُ، وَيَعْقُوبُ بْنُ إِبْرَاهِيمَ الدَّوْرَقِيُّ، جَمِيعًا عَنِ ابْنِ عُلَيَّةَ، - وَاللَّفْظُ لِيَعْقُوبَ - قَالاَ حَدَّثَنَا إِسْمَاعِيلُ ابْنُ عُلَيَّةَ، أَخْبَرَنَا أَيُّوبُ، عَنْ مُحَمَّدٍ، قَالَ إِمَّا تَفَاخَرُوا وَإِمَّا تَذَاكَرُوا الرِّجَالُ فِي الْجَنَّةِ أَكْثَرُ أَمِ النِّسَاءُ فَقَالَ أَبُو هُرَيْرَةَ أَوَلَمْ يَقُلْ أَبُو الْقَاسِمِ صلى الله عليه وسلم ‏ "‏ إِنَّ أَوَّلَ زُمْرَةٍ تَدْخُلُ الْجَنَّةَ عَلَى صُورَةِ الْقَمَرِ لَيْلَةَ الْبَدْرِ وَالَّتِي تَلِيهَا عَلَى أَضْوَإِ كَوْكَبٍ دُرِّيٍّ فِي السَّمَاءِ لِكُلِّ امْرِئٍ مِنْهُمْ زَوْجَتَانِ اثْنَتَانِ يُرَى مُخُّ سُوقِهِمَا مِنْ وَرَاءِ اللَّحْمِ وَمَا فِي الْجَنَّةِ أَعْزَبُ ‏"‏ ‏.‏
Reference : Sahih Muslim 2834 a
In-book reference : Book 53, Hadith 16
USC-MSA web (English) reference : Book 40, Hadith 6793
  (deprecated numbering scheme)