Watlu ma oohiya ilayka min kitabi rabbika la mubaddila likalimatihi walan tajida (surah Kahf: 27)

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(18:27) (O Prophet), *26 recite (the very same) that has been revealed to you in the Book of your Lord, for no one is authorised to make any change whatsoever in the Word of your Lord and (if you will make any change to please any one) you will find no place of refuge to protect you from Him. *27

Watlu maaa oohiya ilaika min Kitaabi Rabbika laa mubaddila li Kalimaatihee wa lan tajida min doonihee multahadaa

*26) After relating the story of the Sleepers of the Cave, the Qur'an begins to review the condition of the Muslims of Makkah at the time of the revelation of the Surah.
*27) This does not mean at alI that, God forbid, the Holy Prophet was inclined to make any changes in the Qur'an to please the disbelievers of Makkah and was thinking of some formula of compromise with the chiefs of the Quraish which necessitated a warning that he was not authorised to do so. As a matter of tact, though this was apparently addressed to the Holy Prophet, it was really meant for the disbelievers that they should not entertain any hope whatsoever for anything like this, as if to say, "You must understand it once for all that Our Messenger is nut authorised to make any changes in Our Revelation, for he has to precisely just as it is sent down to him. If you want to accept it, you will have to accept it in its entirety as it is being sent by the Lord of the Universe: and if you want to reject it, you may do so but you must understand it well that no modification even in the least, will be made in it to please you. " This was the answer to the repeated demand of the disbelievers. "If you do insist, O Muhammad (Allah's peace be upon him), that we should accept your Message in its entirety, then make certain modifications in it to accommodate some creeds and customs of our forefathers, and we will accept your Message. This is our offer for a compromise and this will save our people from dis-union. " This demand of the disbelievers has been cited in the Qur'an at several places and the same answer has been given, e.g. "When Our clear Revelations are recited to them, those who do not expect to meet Us, say, `Bring an other Qur'an in its stead or make some amendments in it' ...." (X: 15)