يَوْمَ يَدْعُوكُمْ فَتَسْتَجِيبُونَ بِحَمْدِهِۦ وَتَظُنُّونَ إِن لَّبِثْتُمْ إِلَّا قَلِيلًا

On the Day He will call you and you will respond with praise of Him and think that you had not remained [in the world] except for a little."

الإسراء 52

فَمَا ظَنُّكُم بِرَبِّ ٱلْعَـٰلَمِينَ

Then what is your thought about the Lord of the worlds?"

الصافات 87

إِنْ هِىَ إِلَّآ أَسْمَآءٌ سَمَّيْتُمُوهَآ أَنتُمْ وَءَابَآؤُكُم مَّآ أَنزَلَ ٱللَّهُ بِهَا مِن سُلْطَـٰنٍ ۚ إِن يَتَّبِعُونَ إِلَّا ٱلظَّنَّ وَمَا تَهْوَى ٱلْأَنفُسُ ۖ وَلَقَدْ جَآءَهُم مِّن رَّبِّهِمُ ٱلْهُدَىٰٓ

They are not but [mere] names you have named them - you and your forefathers - for which Allāh has sent down no authority. They follow not except assumption and what [their] souls desire, and there has already come to them from their Lord guidance.

النجم 23