Al-A'raf 7:52

وَلَقَدْ جِئْنَـٰهُم بِكِتَـٰبٍ فَصَّلْنَـٰهُ عَلَىٰ عِلْمٍ هُدًى وَرَحْمَةً لِّقَوْمٍ يُؤْمِنُونَ

Walaqad ji'nāhum bikitābin faṣṣalnāhu ʿalā ʿil'min hudan waraḥmatan liqawmin yu'minūna

And We had certainly brought them a Book which We detailed by knowledge - as guidance and mercy to a people who believe.