Wanunazzilu mina alqur-ani ma huwa shifaon warahmatun lilmu'mineena wala yazeedu aththalimeena illa (surah Al Isra: 82)

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

(17:82) We are sending down to you through the revelation of the Qur'an what is a healing and mercy to the Believers, though it adds nothing but loss to the workers of iniquity. *102

Wa nunazzilu minal quraani maa huwa shifaaa`unw wa rahmatul lilmu;mineena wa laa yazeeduz zaalimeena illaa khasaaraa

*102) That is, "Those people who make the Qur'an their guide and their book of law, arc favoured with the blessing of Allah and arc cured of all their mental, psychological, moral. and cultural diseases. On the other hand, those wicked people who reject this and turn their back on its guidance, in fact, are unjust to themselves. Therefore, the Qur'an dces not allow them to remain even in that bad condition in which they were before its revelation or its knowledge but involves them in a greater loss than before. This is because before the revelation of the Qur'an or their acquaintance with it, they suffered from ignorance alone but when the Qur'an came before them and made distinct the difference between Truth and falsehood, no excuse was left with them to remain in their previous condition of. ignorance. After this, if they reject its guidance and persist in their deviation, it is a clear proof that they are not ignorant but workers of iniquity and worshippers of falsehood, which arc averse to the Truth. For then their position is of the one who, when presented both poison and elixir, makes a choice of poison. Therefore, they themselves are in that cast fully responsible for their deviation and whatever crimes they commit after that, shall incur their full punishment. It is obvious that the consequent loss of wickedness must be far greater than the loss of ignorance. The Holy Prophet has summed this up in this concise and comprehensive sentence: "The Qur'an is either an argument in your favour or against you. "