How Allah (swt) describes himself in Islam?

In Islam, God (ٱللَّٰه‎, Allāh)is the absolute one, the all-powerful and all-knowing ruler of the universe, and the creator of everything in existence.
Islam emphasizes that God is strictly singular (tawḥīd); unique (wāḥid); inherently One (aḥad) and also all-merciful and omnipotent.

God has no parents and no children. According to Islam, God is neither a material nor a spiritual being. According to Islamic teachings, beyond the Throne (al-ʾArsh) and according to the Quran, “No vision can grasp him, but His grasp is over all vision: He is above all comprehension, yet is acquainted with all things.”

In Islam there is only one God and there are 99 names of that one God (al-ʾasmāʾ al-ḥusnā lit. meaning: “The best names”), each of which evokes a distinct attribute of God. All these names refer to God, the supreme and all-comprehensive. Among the 99 names of God, the most familiar and frequent are “the Entirely Merciful” (Ar-Raḥmān) and “the Especially Merciful” (Ar-Raḥīm). Creation and ordering of the universe is seen as an act of prime mercy for which all creatures praise God’s attributes and bear witness to God’s unity.

One of the best verses in the Quran that Allah describes himself is Ayat-el Kursi:

Ayatul Kursi is the Verse of Surah Al-Baqarah. The largest Surah of Quran Majeed is Surah Al-Baqarah. In addition, the verse number 255 of Surah Al-Baqarah is Ayat-al-Kursi.

Indeed, Ayatul Kursi is the leader of this leader Surah of the Holy Quran.

In the name of Allah, the Beneficent, the Merciful.
“Allah! There is no god but He – the Living, The Self-subsisting, Eternal. No slumber can seize Him Nor Sleep. His are all things In the heavens and on earth. Who is there can intercede In His presence except As he permitteth? He knoweth What (appeareth to His creatures As) Before or After or Behind them. Nor shall they encompass Aught of his knowledge Except as He willeth. His throne doth extend Over the heavens And on earth, and He feeleth No fatigue in guarding And preserving them, For He is the Most High. The Supreme (in glory).”

Surat-al Ikhlas. Chapter 112

1. Say: He is Allah, the One!
2. Allah, the Eternal, the Absolute! 
3. He begets not, nor was He begotten;
4. And there is none comparable unto Him.

The 99 Names and Attributes of Allah (SWT)

Al-Asma-ul-Husna ( اَلاسْمَاءُ الْحُسناى )

The first of the five pillars of Islam is belief in Allah (SWT). As Muslims, we believe in Allah (SWT) in accordance with His beautiful names and attributes. Learning and memorising the names of Allah (SWT) will help us to identify the correct way to believe in Him.

“Allah – there is no deity except Him. To Him belong the best names.” (Qur’an 20:8)

“And to Allah belong the best names, so invoke Him by them.” (Qur’an 7:180)

Prophet Muhammad SAW said:

“Allah has ninety-nine names, i.e. one-hundred minus one, and whoever knows them will go to Paradise.” (Bukhari)

Abu Hurairah reported Prophet Muhammad SAW as saying:

Verily, there are 99 names for Allah, i.e. hundred excepting one. He who enumerates them would get into Paradise.  (Muslim)

#	Name	Transliteration	Meaning
1	الرَّحْمَنُ	AR-RAHMAAN	The Beneficent
2	الرَّحِيمُ	AR-RAHEEM	The Merciful
3	الْمَلِكُ	AL-MALIK	The Eternal Lord
4	الْقُدُّوسُ	AL-QUDDUS	The Most Sacred
5	السَّلاَمُ	AS-SALAM	The embodiment of Peace
6	الْمُؤْمِنُ	AL-MU’MIN	The Infuser of Faith
7	الْمُهَيْمِنُ	AL-MUHAYMIN	The Preserver of Safety
8	الْعَزِيزُ	AL-AZIZ	All Mighty
9	الْجَبَّارُ	AL-JABBAR	The Compeller, The Restorer
10	الْمُتَكَبِّر	AL-MUTAKABBIR	The Supreme, The Majestic
11	الْخَالِقُ	AL-KHAALIQ	The Creator, The Maker
12	الْبَارِئُ	AL-BAARI	The Evolver
13	الْمُصَوِّرُ	AL-MUSAWWIR	The Fashioner
14	الْغَفَّارُ	AL-GHAFFAR	The Great Forgiver
15	الْقَهَّارُ	AL-QAHHAR	The All-Prevailing One
16	الْوَهَّابُ	AL-WAHHAAB	The Supreme Bestower
17	الرَّزَّاقُ	AR-RAZZAAQ	The Provider
18	الْفَتَّاحُ	AL-FATTAAH	The Supreme Solver
19	اَلْعَلِيْمُ	AL-‘ALEEM	The All-Knowing
20	الْقَابِضُ	AL-QAABID	The Withholder
21	الْبَاسِطُ	AL-BAASIT	The Extender
22	الْخَافِضُ	AL-KHAAFIDH	The Reducer
23	الرَّافِعُ	AR-RAAFI’	The Exalter, The Elevator
24	الْمُعِزُّ	AL-MU’IZZ	The Honourer, The Bestower
25	ٱلْمُذِلُّ	AL-MUZIL	The Dishonourer, The Humiliator
26	السَّمِيعُ	AS-SAMEE’	The All-Hearing
27	الْبَصِيرُ	AL-BASEER	The All-Seeing
28	الْحَكَمُ	AL-HAKAM	The Impartial Judge
29	الْعَدْلُ	AL-‘ADL	The Utterly Just
30	اللَّطِيفُ	AL-LATEEF	The Subtle One, The Most Gentle
31	الْخَبِيرُ	AL-KHABEER	The All-Aware
32	الْحَلِيمُ	AL-HALEEM	The Most Forbearing
33	الْعَظِيمُ	AL-‘AZEEM	The Magnificent, The Supreme
34	الْغَفُور	AL-GHAFOOR	The Great Forgiver
35	الشَّكُورُ	ASH-SHAKOOR	The Most Appreciative
36	الْعَلِيُّ	AL-‘ALEE	The Most High, The Exalted
37	الْكَبِيرُ	AL-KABEER	The Preserver, The All-Heedful and All-Protecting
38	الْحَفِيظُ	AL-HAFEEDH	The Preserver
39	المُقيِت	AL-MUQEET	The Sustainer
40	الْحسِيبُ	AL-HASEEB	The Reckoner
41	الْجَلِيلُ	AL-JALEEL	The Majestic
42	الْكَرِيمُ	AL-KAREEM	The Most Generous, The Most Esteemed
43	الرَّقِيبُ	AR-RAQEEB	The Watchful
44	ٱلْمُجِيبُ	AL-MUJEEB	The Responsive One
45	الْوَاسِعُ	AL-WAASI’	The All-Encompassing, the Boundless
46	الْحَكِيمُ	AL-HAKEEM	The All-Wise
47	الْوَدُودُ	AL-WADUD	The Most Loving
48	الْمَجِيدُ	AL-MAJEED	The Glorious, The Most Honorable
49	الْبَاعِثُ	AL-BA’ITH	The Infuser of New Life
50	الشَّهِيدُ	ASH-SHAHEED	The All Observing Witnessing
51	الْحَقُ	AL-HAQQ	The Absolute Truth
52	الْوَكِيلُ	AL-WAKEEL	The Trustee, The Disposer of Affairs
53	الْقَوِيُ	AL-QAWIYY	The All-Strong
54	الْمَتِينُ	AL-MATEEN	The Firm, The Steadfast
55	الْوَلِيُّ	AL-WALIYY	The Protecting Associatey
56	الْحَمِيدُ	AL-HAMEED	The Praiseworthy
57	الْمُحْصِي	AL-MUHSEE	The All-Enumerating, The Counter
58	الْمُبْدِئُ	AL-MUBDI	The Originator, The Initiator
59	ٱلْمُعِيدُ	AL-MUEED	The Restorer, The Reinstater
60	الْمُحْيِي	AL-MUHYI	The Giver of Life
61	اَلْمُمِيتُ	AL-MUMEET	The Inflicter of Death
62	الْحَيُّ	AL-HAYY	The Ever-Living
63	الْقَيُّومُ	AL-QAYYOOM	The Sustainer, The Self-Subsisting
64	الْوَاجِدُ	AL-WAAJID	The Perceiver
65	الْمَاجِدُ	AL-MAAJID	The Illustrious, the Magnificent
66	الْواحِدُ	AL-WAAHID	The One
67	اَلاَحَدُ	AL-AHAD	The Unique, The Only One
68	الصَّمَدُ	AS-SAMAD	The Eternal, Satisfier of Needs
69	الْقَادِرُ	AL-QADEER	The Omnipotent One
70	الْمُقْتَدِرُ	AL-MUQTADIR	The Powerful
71	الْمُقَدِّمُ	AL-MUQADDIM	The Expediter, The Promoter
72	الْمُؤَخِّرُ	AL-MU’AKHKHIR	The Delayer
73	الأوَّلُ	AL-AWWAL	The First
74	الآخِرُ	AL-AAKHIR	The Last
75	الظَّاهِرُ	AZ-ZAAHIR	The Manifest
76	الْبَاطِنُ	AL-BAATIN	The Hidden One, Knower of the Hidden
77	الْوَالِي	AL-WAALI	The Governor, The Patron
78	الْمُتَعَالِي	AL-MUTA’ALI	The Self Exalted
79	الْبَرُّ	AL-BARR	The Source of All Goodness
80	التَّوَابُ	AT-TAWWAB	The Ever-Pardoning, The Relenting
81	الْمُنْتَقِمُ	AL-MUNTAQIM	The Avenger
82	العَفُوُ	AL-‘AFUWW	The Pardoner
83	الرَّؤُوفُ	AR-RA’OOF	The Most Kind
84	َمَالِكُ ٱلْمُلْكُ	MAALIK-UL-MULK	Master of the Kingdom, Owner of the Dominion
85	ذُوالْجَلاَلِ وَالإكْرَامِ	DHUL-JALAALI WAL-IKRAAM	Possessor of Glory and Honour, Lord of Majesty and Generosity
86	الْمُقْسِطُ	AL-MUQSIT	The Just One
87	الْجَامِعُ	AL-JAAMI’	The Gatherer, the Uniter
88	ٱلْغَنيُّ	AL-GHANIYY	The Self-Sufficient, The Wealthy
89	ٱلْمُغْنِيُّ	AL-MUGHNI	The Enricher
90	اَلْمَانِعُ	AL-MANI’	The Withholder
91	الضَّارَ	AD-DHARR	The Distresser
92	النَّافِعُ	AN-NAFI’	The Propitious, the Benefactor
93	النُّورُ	AN-NUR	The Light, The Illuminator
94	الْهَادِي	AL-HAADI	The Guide
95	الْبَدِيعُ	AL-BADEE’	The Incomparable Originator
96	اَلْبَاقِي	AL-BAAQI	The Everlasting
97	الْوَارِثُ	AL-WAARITH	The Inheritor, The Heir
98	الرَّشِيدُ	AR-RASHEED	The Guide, Infallible Teacher
99	الصَّبُورُ	AS-SABOOR	The Forbearing, The Patient

Further Reading: Allah, As described in the Quran