Sura al-Anʿām 6:91

وَمَا قَدَرُوا۟ ٱللَّـهَ حَقَّ قَدْرِهِۦٓ إِذْ قَالُوا۟ مَآ أَنزَلَ ٱللَّـهُ عَلَىٰ بَشَرٍ مِّن شَىْءٍ قُلْ مَنْ أَنزَلَ ٱلْكِتَٰبَ ٱلَّذِى جَآءَ بِهِۦ مُوسَىٰ نُورًا وَهُدًى لِّلنَّاسِ تَجْعَلُونَهُۥ قَرَاطِيسَ تُبْدُونَهَا وَتُخْفُونَ كَثِيرًا وَعُلِّمْتُم مَّا لَمْ تَعْلَمُوٓا۟ أَنتُمْ وَلَآ ءَابَآؤُكُمْ قُلِ ٱللَّـهُ ثُمَّ ذَرْهُمْ فِى خَوْضِهِمْ يَلْعَبُونَ

wa-mā qadarū allāha ḥaqqa qadrihi idh qālū mā anzala allāhu ʿalā basharin min shayʾin qul man anzala l-kitāba alladhī jāa bihi mūsā nūran wa-hudan lil-nāsi tajʿalūnahu qarāṭīsa tubdūnahā wa-tukhfūna kathīran waʿullimtum mā lam taʿlamū antum wa-lā ābāʾukum quli allāhu thumma dharhum fī khawḍihim yalʿabūna

No just estimate of Allah do they make when they say: "Nothing doth Allah send down to man (by way of revelation)" Say: "Who then sent down the Book which Moses brought?- a light and guidance to man: But ye make it into (separate) sheets for show, while ye conceal much (of its contents): therein were ye taught that which ye knew not- neither ye nor your fathers." Say: "Allah (sent it down)": Then leave them to plunge in vain discourse and trifling.