Sahih Muslim , Book 36, Hadith 6597 (USC-MSA) ⓘ
Ibn Abbas reported that Allah's Messenger said: I had a chance to look into the Paradise and I found that majority of the people was poor and I looked into the Fire and there I found the majority constituted by women.
حَدَّثَنَا زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا إِسْمَاعِيلُ بْنُ إِبْرَاهِيمَ، عَنْ أَيُّوبَ، عَنْ أَبِي رَجَاءٍ، الْعُطَارِدِيِّ قَالَ سَمِعْتُ ابْنَ عَبَّاسٍ، يَقُولُ قَالَ مُحَمَّدٌ صلى الله عليه وسلم " اطَّلَعْتُ فِي الْجَنَّةِ فَرَأَيْتُ أَكْثَرَ أَهْلِهَا الْفُقَرَاءَ وَاطَّلَعْتُ فِي النَّارِ فَرَأَيْتُ أَكْثَرَ أَهْلِهَا النِّسَاءَ " .
also referenced under: Book 49, Hadith 2 (In-Book) & Hadith 2737 (Reference)