Rational Proof

فَلَمَّا رَءَا ٱلشَّمْسَ بَازِغَةً قَالَ هَـٰذَا رَبِّى هَـٰذَآ أَكْبَرُ ۖ فَلَمَّآ أَفَلَتْ قَالَ يَـٰقَوْمِ إِنِّى بَرِىٓءٌ مِّمَّا تُشْرِكُونَ

And when he saw the sun rising, he said, "This is my lord; this is greater." But when it set, he said, "O my people, indeed I am free from what you associate with Allāh.

فَإِلَّمْ يَسْتَجِيبُوا۟ لَكُمْ فَٱعْلَمُوٓا۟ أَنَّمَآ أُنزِلَ بِعِلْمِ ٱللَّهِ وَأَن لَّآ إِلَـٰهَ إِلَّا هُوَ ۖ فَهَلْ أَنتُم مُّسْلِمُونَ

And if they do not respond to you - then know that it [i.e., the Qur’ān] was revealed with the knowledge of Allāh and that there is no deity except Him. Then, would you [not] be Muslims?

نَحْنُ خَلَقْنَـٰكُمْ فَلَوْلَا تُصَدِّقُونَ

We have created you, so why do you not believe?