(2) باب فِي أَسْمَاءِ اللَّهِ تَعَالَى وَفَضْلِ مَنْ أَحْصَاهَا
Abu Huraira reported Allah's Apostle (ﷺ) as saying:
Verily, there are ninety-nine names for Allah, i. e. hundred excepting one. He who enumerates them would get into Paradise. And Hammam has made this addition on the authority of Abu Huraira who reported it from Allah's Apostle (ﷺ) that he said:" He is Odd (one) and loves odd number."
Reference: Sahih Muslim 2677 b
In-book reference: Book 48, Hadith 6
USC-MSA web (English) reference(deprecated numbering scheme): Book 35, Hadith 6476