(13) باب النَّارُ يَدْخُلُهَا الْجَبَّارُونَ وَالْجَنَّةُ يَدْخُلُهَا الضُّعَفَاءُ
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.
Reference: Sahih Muslim 2848 d
In-book reference: Book 53, Hadith 49
USC-MSA web (English) reference(deprecated numbering scheme): Book 40, Hadith 6826