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." (ID)
English reference (ID): Vol. 4, Book 12, Hadith 2532 (ID)
Arabic reference (ID): Book 38, Hadith 2725 (ID)