The Messenger of Allah ﷺ said to me: they (the people) till constantly ask you, Abu Huraira, (about different things pertaining to religion) the they would say: Well, there is Allah, but after all who created Allah? He (Abu Huraira) narrated: Once we were in the mosque that some of the Bedouins came there and said: Well, there is Allah, but who created Allah? He (the narrator) said: I took hold of the pebbles in my fist and flung at them and remarked: Stand up, stand up (go away) my friend (the Holy Prophet) told the truth.  

لِي رَسُولُ اللَّهِ ﷺ لاَ يَزَالُونَ يَسْأَلُونَكَ يَا أَبَا هُرَيْرَةَ حَتَّى يَقُولُوا هَذَا اللَّهُ فَمَنْ خَلَقَ اللَّهَ قَالَ فَبَيْنَا أَنَا فِي الْمَسْجِدِ إِذْ جَاءَنِي نَاسٌ مِنَ الأَعْرَابِ فَقَالُوا يَا أَبَا هُرَيْرَةَ هَذَا اللَّهُ فَمَنْ خَلَقَ اللَّهَ قَالَ فَأَخَذَ حَصًى بِكَفِّهِ فَرَمَاهُمْ ثُمَّ قَالَ قُومُوا قُومُوا صَدَقَ خَلِيلِي