Abu Sa'eed narrated that the Prophet (ﷺ) said:
"Indeed there are a hundred levels in Paradise, if all of the People of Paradise were to be gathered in one of them, it would have sufficed them." (TR)
English reference (TR): Vol. 4, Book 12, Hadith 2532 (TR)
Arabic reference (TR): Book 38, Hadith 2725 (TR)