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wa-ka-dhālika nuṣarrifu l-ʾāyāti wa-li-yaqūlū darasta wa-li-nubayyinahū li-qawmin yaʿlamūna
Thus do We paraphrase the signs variously, lest they should say, ‘You have received instruction,’ and so that We may make it clear for a people who have knowledge.
— Ali Quli Qarai
Surah Al-‘An’am, Verse 105
105. "And thus do We repeat the Signs, that they may say (unto you): "You have studied" and that We may make it clear to a people who know."
In order to emphasize that the final decision for choosing the way of right and the way of wrong is upon the servants of Allah themselves, the verse says:
But a group of the opponents may oppose you and, without having any authentic evidence or research, they say that you have learnt these lessons from the Jews and the Christians, which have been taken from their revealed Books.
Yet, Our aim is that We make it manifest for those who have knowledge and understanding.