Qur'an 2:16 · Al-Baqara

أُو۟لَٰٓئِكَ ٱلَّذِينَ ٱشْتَرَوُا۟ ٱلضَّلَٰلَةَ بِٱلْهُدَىٰ فَمَا رَبِحَت تِّجَٰرَتُهُمْ وَمَا كَانُوا۟ مُهْتَدِينَ

(16) Those are the ones who have purchased error [in exchange] for guidance, so their transaction has brought no profit, nor were they guided.