99 names of Allah
A list of 99 names of Allah were collected from the Holy Quran and Sunnah, although the list may not have been limited to just 99 names, the best ones were highlighted that best describe the endless qualities of Allah (S.W.T.) .
These names are known as Asmaa al-Husna (The Most Beautiful Names), reciting each of 99 name has numerous benefits.
Hadith regarding 99 names of Allah :
Narrated Abu Huraira: Prophet Muhammad SAW said, “Allah has ninety-nine names, i.e. one-hundred minus one, and whoever knows them will go to Paradise.”
Sahih Al-Bukhari – Book 50 Hadith 894
Abu Huraira reported Prophet Muhammad SAW 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 Prophet Muhammad SAW that he said: “He is Odd (one) and loves odd number.”
Sahih Muslim – Book 35 Hadith 6476
Benefits of Reciting The Most Beautiful Names of Allah
When adopting a particular name as Wazeefah (daily recital) add 
(Yaa) before the name and remove the
(Al).
For example, 
(Ar-Rahmaan) must be recited as 
(Yaa-Rahmaanu) and NOT as
(Yaa-Ar-Rahmaanu).
Name
2. Ar - Rahmaan
Meaning
The Compassionate, The Beneficent
Benefits
If
Ya Rahmanu is recited 100 times after every fard prayer, Almighty Allah will be very merciful to the individual and also he/she will regain memory and will be cured from forgetfulness. If it is recited regularly the cruel hearted person will become merciful.
