ٱللَّهُ نَزَّلَ أَحۡسَنَ ٱلۡحَدِيثِ كِتَٰبًا مُّتَشَٰبِهًا مَّثَانِىَ تَقۡشَعِرُّ مِنۡهُ جُلُودُ ٱلَّذِينَ يَخۡشَوۡنَ رَبَّهُمۡ ثُمَّ تَلِينُ جُلُودُهُمۡ وَقُلُوبُهُمۡ إِلَىٰ ذِكۡرِ ٱللَّهِ ۚ ذَٰلِكَ هُدَى ٱللَّهِ يَهۡدِى بِهِۦ مَن يَشَآءُ ۚ وَمَن يُضۡلِلِ ٱللَّهُ فَمَا لَهُۥ مِنۡ هَادٍ
Allah has revealed (from time to time) the most beautiful Message in the form of a Book, consistent with itself, (yet) repeating (its teaching in various aspects): the skins of those who fear their Lord tremble thereat; then their skins and their hearts do soften to the celebration of Allah's praises. Such is the guidance of Allah: He guides therewith whom He pleases, but such as Allah leaves to stray, can have none to guide.<br/>
God has revealed the best of discourses, a Book (kitaaban, substitutes for ahsana, 'the best') namely, a Qur'aan, consimilar, in other words, some of its parts are similar to others in terms of [their] arrangement and otherwise, in coupled phrases - [a Book] in which the Promise [of reward] is coupled with the Threat [of punishment], together with other such [couplings] - whereat quiver, at the mention of whose Threat shiver, the skins of those who fear their Lord; then their skins and their hearts soften to, they are reassured by, the remembrance of God, that is, at the mention of His Promise. That, Book, is God's guidance, by which He guides whomever He will, of His servants; and whomever God leads astray, for him there is no guide.