16أُولٰئِكَ الَّذينَ اشتَرَوُا الضَّلالَةَ بِالهُدىٰ فَما رَبِحَت تِجارَتُهُم وَما كانوا مُهتَدينَ(Irfan-ul-Quran)These are the people who have purchased misguidance for guidance; but their trade did not yield any gain and they did not know the way to (gainful and profitable) bargain.