(2) باب فِي أَسْمَاءِ اللَّهِ تَعَالَى وَفَضْلِ مَنْ أَحْصَاهَا
Abu Huraira reported Allah's Messenger (ﷺ) as saying:
There are ninety-nine names of Allah; he who commits them to memory would get into Paradise. Verily, Allah is Odd (He is one, and it is an odd number) and He loves odd number. And in the narration of Ibn 'Umar (the words are):" He who enumerated them."
Reference: Sahih Muslim 2677 a
In-book reference: Book 48, Hadith 5
USC-MSA web (English) reference(deprecated numbering scheme): Book 35, Hadith 6475