Allah is the proper name of God, however, we know Him generally through His attributes. These attributes describe how Allah manifests Himself to us. God's attributes are innumerable since human intellect cannot possibly comprehend every aspect of the Supreme Being. A Hadith of the Holy Prophet (peace be on him) makes mention of Ninety Nine names of Allah commonly known as al- Asmaul Husna, the Most Names. In the Holy Quran we read: "And to Allah alone belong all perfect attributes. So call Him by these. And leave alone those who deviate from the right way with respect to His Attributes." (7:181).
"Allah - there is no God but He, the Living, the Self-Subsisting and All-Sustaining. Slumber seizes Him not, nor sleep. To Him belongs whatsoever is in the heavens and whatsoever is in the earth. Who is he that will intercede with Him except by His permission? He knows what is before them and what is behind them; and they encompass nothing of His knowledge except what He pleases. His knowledge extends over the heavens and the earth; and the care of them burdens Him not; and He is the High, the Great." (2:256)
Allah is the Light of the heavens and the earth. The similitude of His light is a lustrous niche, wherein is a lamp. The lamp is in a glass. The glass is as it were a glittering star. It is lit from blessed tree - an olive - neither of the east nor of the west, whose oil would well-nigh glow forth even though fire touched it not.Light upon light! Allah guides to His light whomsoever He will. And Allah sets forth parables to men, and Allah know all things full well.This light is now lit in houses with regard to which Allah has ordained that they be exalted and that His name be remembered in them, Therein is He glorified in the mornings and the evenings (24:36-37)
"He is Allah, and there is no God beside Him, the Knower of the unseen and the seen. He is Gracious, the Merciful.He is Allah, and there is no God beside Him, the Sovereign, the Holy One, the Source of Peace, the Bestower of Security, the Protector, the Mighty, the Subduer, the Exalted. Holy is Allah far above that which they associate with Him.He is Allah, the Creator, the Maker, the Fashioner. His are the most Beautiful Names. All that is in the heavens and the earth glorifies Him, and He is the Mighty the Wise.(59: 23-25)
Abu Huraira (may Allah be pleased with him) narrated: The Holy Prophet (Peace and Blessings of Allah be upon him) said, "Allah has ninety nine Names, one hundred less one; and who memorized them all by heart will enter Paradise." (Bukhari, The Book of Tauhid.