Al-Baqarah 2:16

أُو۟لَـٰٓئِكَ ٱلَّذِينَ ٱشْتَرَوُا۟ ٱلضَّلَـٰلَةَ بِٱلْهُدَىٰ فَمَا رَبِحَت تِّجَـٰرَتُهُمْ وَمَا كَانُوا۟ مُهْتَدِينَ

Ulāika alladhīna ish'tarawū l-ḍalālata bil-hudā famā rabiḥat tijāratuhum wamā kānū muh'tadīna

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