2:16
Al-Baqarah 16
Surah Al-Baqarah (البقرة), verse 16 — reference 2:16. Arabic text with optional translation and free audio on Al-Qalam.
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.