Surat Yunus (37-38)

{وَمَا كَانَ هَـذَا الْقُرْآنُ أَن يُفْتَرَى مِن دُونِ اللّهِ وَلَـكِن تَصْدِيقَ الَّذِي بَيْنَ يَدَيْهِ وَتَفْصِيلَ الْكِتَابِ لاَ رَيْبَ فِيهِ مِن رَّبِّ الْعَالَمِينَ} (يونس : 37)

37- This Glorious Qur'an with its completeness and greatness in news and rulings, and its miraculous nature, system, method and secrets cannot be attributed falsely to Allah because there is a clear difference between these words and the words of humans. No one can bring something of the like even a Surah, so it truly came from Allah (Glory be to Him). It is a heavenly book that affirms the previously revealed scriptures and judges them by telling the corruption and change that took place therein and explaining facts and rulings. Those who pursue the truth cannot miss it because of its clearness and high status.

{أَمْ يَقُولُونَ افْتَرَاهُ قُلْ فَأْتُواْ بِسُورَةٍ مِّثْلِهِ وَادْعُواْ مَنِ اسْتَطَعْتُم مِّن دُونِ اللّهِ إِن كُنتُمْ صَادِقِينَ} (يونس : 38)

38- Do polytheists say that Muhammad (peace be upon him) made up this Qur'an? O Prophet, say to them: If you really doubt that the Qur'an was truly revealed by Allah, bring one Surah that looks like the Qur'an and seek the help of humans and jinns to bring something of the like if you are truthful in what you are saying. If you are just, you may say: You are a human like us and neither you nor we can bring something of the like