And it has been written, that the highest revelational teachings are a mercy therein,  and the highest of All purities is Allah subhanna wa ta al'la, and the limitations' are a mercy in their own rights of understanings', " And has it not been said that the qu'raan has been created pure and has been delivered unto the muslim teachers of pure intent ,  then they thereafter deliver its' meaning to the muslims seeking pure intent of actions', and the promise of insight of faith matters are revealed, and the teachers who hold firm, have behaviour similar to the laws set in paradise therein, and to carry the banner of islam is excellence of manners and speech, a inner sight of faith values'.

sura naas'aa 82