بسم الله الرحمن الرحيم
(Fatwa: 430/329/SN=4/1439)
Ninety nine names of Allah are proved from Sahih Hadith. It is recorded in Bukhari:
Allah has ninety nine names, i.e. one-hundred minus one, and whoever remembers them will go to Paradise.
عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ: إِنَّ لِلَّهِ تِسْعَةً وَتِسْعِينَ اسْمَا مِائَةً إِلاَّ وَاحِدًا مَنْ أَحْصَاهَا دَخَلَ الْجَنَّةَ.(بخارى، رقم: 2736)
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband