Abu Hurairah reported to the Messenger of Allah( may peace be upon him) as sayings: People will continue to ask one another(questions) till this is pronounced: Allah created all things, but who created Allah ? Whoever comes across anything of that, he should say: I believe in Allah.
The Prophet Muhammad(peace be upon him) was teaching us through this hadith how important it is for us to remain steadfast in our faith despite any doubts or questions we may have about God's existence. He was reminding us that no matter what happens, we must always remember our belief in Him and never forget His greatness as the Creator of all things. By doing so, we can stay strong on our path towards righteousness and live a life full of blessings from Him.