Wa alaikum assalamu wa rahatullah wa bararkatu

Thank you very much for your interesting question.

In fact, change is the sign of creation and extinction which are the distinctive of this worldly life. Yet, the only One who is characterized with perpetuity and endlessness is the One who brought this life into existence. He is Almighty Allah, Glory be to Him. However, some may inquire why not is your God created? This is what Sheikh Muhammad Salih Al-Munajjid explains in the following words:

“This question which the Satan asked you is inherently false and self-contradictory. If we were to say -for the sake of argument- that someone created Allah, then they would ask you, who created the creator of the Creator? Then, who created the creator of the creator of the creator?! And so on, ad infinitum. This is irrational and impossible.

All of creation goes back to the Creator Who created all things. No one created Him; He created everything other than Himself. This is what makes sense and is logical. This Creator is Allah, may He be glorified and exalted.

With regard to what our religion tells us, the Prophet (peace be upon him) told us about this question, where it comes from, and how to respond to it.

Abu Hurairah (may Allah be pleased with him) said: "the Messenger of Allah (peace be upon him) said: “People will keep on asking questions until someone will say: Allah created the universe, but who created Allah? Whoever encounters anything like that, let him say: Amantu Billah (I believe in Allah) ".

The Messenger of Allah (peace be upon him) said: «The Satan will come to one of you and say: Who created the heaven? Who created the earth? He will say: Allah», then he mentioned something similar (to the previous report), and added «And His Messengers [i.e., amantu Billah wa Rusulihi = I believe in Allah and His Messengers]».

In these hadiths we see: Where this question comes from; from the Satan.

How to deal with it, which is:

- To stop pursuing these thoughts and these tricks of the Satan.

- To say: I believe in Allah and His Messengers.

- To seek refuge with Allah from the Satan.

3. With regard to the prior existence of Allah, our Prophet (peace be upon him) has told us about this, for example:

He (peace be upon him) said: “O Allah, You are the First and there is nothing before You; O Allah, You are the Last and there is nothing after You.” (Muslim)

He (peace be upon him) said: «Allah existed when there was nothing apart from Him» According to another report: «There was nothing before Him.” (Al-Bukhari)

We ask Allah to grant us sincere and certain faith with no doubts. And Allah is the Source of strength.

Please keep in touch.

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Source: Taken from islamway.net