And We had certainly brought them a Book which We detailed by knowledge - as guidance and mercy to a people who believe.
The Saheeh International Quran Translation
وَلَقَدْ جِئْنَٰهُم بِكِتَٰبٍ فَصَّلْنَٰهُ عَلَىٰ عِلْمٍ هُدًى وَرَحْمَةً لِّقَوْمٍ يُؤْمِنُونَAnd We had certainly brought them a Book which We detailed by knowledge - as guidance and mercy to a people who believe.