Sahih Muslim 7180

Arabic

حَدَّثَنِي زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا عَفَّانُ، حَدَّثَنَا حَمَّادٌ، - يَعْنِي ابْنَ سَلَمَةَ - أَخْبَرَنَا ثَابِتٌ، قَالَ سَمِعْتُ أَنسًا، يَقُولُ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏ "‏ يَبْقَى مِنَ الْجَنَّةِ مَا شَاءَ اللَّهُ أَنْ يَبْقَى ثُمَّ يُنْشِئُ اللَّهُ تَعَالَى لَهَا خَلْقًا مِمَّا يَشَاءُ ‏"‏ ‏.‏

Translation

Anas reported Allah's Apostle (ﷺ) as saying:There would be left some space in Paradise as Allah would like that to be left. Then Allah would create another creation as He would like

Authenticity

Sahih

Reference