There Is Only One God

One of similarities between Sikhism and Islam their belief in our God. The SGGS starts its intro by telling us about their fundamental belief of One God.

 

ੴ ਸਤਿ ਨਾਮੁ ਕਰਤਾ ਪੁਰਖੁ ਨਿਰਭਉ ਨਿਰਵੈਰੁ ਅਕਾਲ ਮੂਰਤਿ ਅਜੂਨੀ ਸੈਭੰ ਗੁਰ ਪ੍ਰਸਾਦਿ ॥ ੴ सति नामु करता पुरखु निरभउ निरवैरु अकाल मूरति अजूनी सैभं गुर प्रसादि ॥

 Ik▫oaʼnkār saṯ nām karṯā purakẖ nirbẖa▫o nirvair akāl mūraṯ ajūnī saibẖaʼn gur parsāḏ.

One Universal Creator God. 

The Name Is Truth.

Creative Being Personified.

No Fear. No Hatred.

Image Of The Undying, Beyond Birth, Self-Existent. By Guru's Grace ~

 

For Muslims this also their main pillar of religion:

                                   لا إله إلا الله

       There is no deity but Allah.

In addition, Surah Iqlas is Surah which very similar to opening of SGGS.

                             

  بِسْمِ اللَّهِ الرَّحْمَٰنِ الرَّحِيمِ
Bismillahir Rahmanir Rahim
In the name of God, Most Gracious, Most Merciful.
 1. قُلْ هُوَ اللَّـهُ أَحَدٌ
 Qul huw al-lāhu ’aḥad
 Say, “He is Allah, [who is] One,
 2. اللَّـهُ الصَّمَدُ
 Allāhu Ss-Samad
 Allah—the Sustainer ˹needed by all˺.
 3. لَمْ يَلِدْ وَلَمْ يُولَدْ
 Lam yalid walami yū lad He neither begets nor is born,
 4. وَلَمْ يَكُن لَّهُ كُفُوًا أَحَدٌ
 Wala mia yaku l-lahū kufu’an aḥad
 Nor is there to Him any equivalent.
 (Quran Surah 112) 

 

 

Then SGGS continues talking about how God is beyond time. 

ਆਦਿ ਸਚੁ ਜੁਗਾਦਿ ਸਚੁ ॥ आदि सचु जुगादि सचु ॥ Āḏ sacẖ jugāḏ sacẖ. True In The Primal Beginning. True Throughout The Ages.

ਹੈ ਭੀ ਸਚੁ ਨਾਨਕ ਹੋਸੀ ਭੀ ਸਚੁ ॥੧॥ है भी सचु नानक होसी भी सचु ॥१॥ Hai bẖī sacẖ Nānak hosī bẖī sacẖ. ||1|| True Here And Now. O Nanak, Forever And Ever True. ||1||

 

The Muslims also believe Allah is beyond time.

هُوَ ٱلْأَوَّلُ وَٱلْـَٔاخِرُ وَٱلظَّـٰهِرُ وَٱلْبَاطِنُ ۖ وَهُوَ بِكُلِّ شَىْءٍ عَلِيمٌ  Huwal Awwalu wal’Aakhiru waz Zaahiru wal Baatinu wa huwa bikulli shai’in Aleem He is the First and the Last, the Ascendant and the Intimate, and He is, of all things, Knowing. (Quran Surah Hadid 53:3)