عَنِ ابْنِ عَبَّاسٍ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ جَاءَهُ رَجُلٌ فَقَالَ: إِنِّي أُحَدِّثُ نَفْسِي بِالشَّيْءِ لَأَنْ أَكُونَ حُمَمَةً أَحَبُّ إِلَيَّ مِنْ أَنْ أَتَكَلَّمَ بِهِ. قَالَ: «الْحَمْدُ لِلَّهِ الَّذِي رَدَّ أَمْرَهُ إِلَى الْوَسْوَسَةِ» . رَوَاهُ أَبُو دَاوُد
Translation
Anas reported God’s messenger as saying, “Men will continue to question one another till they propound this

‘God created everything, but who created God?’ ” Bukhari transmitted it. Muslim’s version is: He declared that God said, “Your people will continue to ask, ‘What is this?’ and ‘what is that?’ till they propound this: God created all things, but who created God?”