The Holy Quran 2:23 — Surah Al-Baqarah
Arabic text
وَإِن كُنتُمْ فِى رَيْبٍ مِّمَّا نَزَّلْنَا عَلَىٰ عَبْدِنَا فَأْتُوا۟ بِسُورَةٍ مِّن مِّثْلِهِۦ وَٱدْعُوا۟ شُهَدَآءَكُم مِّن دُونِ ٱللَّهِ إِن كُنتُمْ صَـٰدِقِينَ
Translation
If you are in doubt about what We have revealed to Our bondsman (if you doubt that the Qur'aan which was revealed to Muhammad is from Allaah), then produce even a single Surah like any in the Qur'aan (something that can match the eloquence, the beauty, the style and the prophecies of the Qur'aan). And (you are also at liberty to) call your witnesses (your helpers and deities) besides Allaah if you are truthful (stand up to this challenge if you feel that you are truthful in your claim that Muhammad was the author of the Qur'aan. If your claim is correct, you will easily be able to compose something equal if not superior because Muhammad was an untutored person).
Tafsir (excerpt) — Tafsir Usmani
A challenge to the disbelievers: it has already been said that the cause of doubt about this Noble Word could either be that something in the speech itself is questionable — and to remove that, لاریب فیہ “there is no doubt in it” has already been stated — or that doubt arises in someone's heart from a shortcoming in understanding or an excess of obstinacy.
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