Surah Al-Imran, ayah 187

3:187

وَإِذۡ أَخَذَ ٱللَّهُ مِيثَٰقَ ٱلَّذِينَ أُوتُواْ ٱلۡكِتَٰبَ لَتُبَيِّنُنَّهُۥ لِلنَّاسِ وَلَا تَكۡتُمُونَهُۥ فَنَبَذُوهُ وَرَآءَ ظُهُورِهِمۡ وَٱشۡتَرَوۡاْ بِهِۦ ثَمَنٗا قَلِيلٗاۖ فَبِئۡسَ مَا يَشۡتَرُونَ ١٨٧

Wa idh akhadhallāhu mīthāqal-ladhīna ūtul-kitāba latubayyinunnahū lin-nāsi walā taktumūnahū fanabadhūhu warā'a zuhūrihim washtaraw bihī thamanan qalīlan fabi'sa mā yashtarūn

And [mention, O Muḥammad], when Allāh took a covenant from those who were given the Scripture, [saying], "You must make it clear [i.e., explain it] to the people and not conceal it." But they threw it away behind their backs and exchanged it for a small price. And wretched is that which they purchased.