The Holy Quran 23:70 — Surah Al-Mu'minun
Arabic text
أَمْ يَقُولُونَ بِهِۦ جِنَّةٌۢ ۚ بَلْ جَآءَهُم بِٱلْحَقِّ وَأَكْثَرُهُمْ لِلْحَقِّ كَـٰرِهُونَ
Translation
Or do they (refuse to accept because they) say that he (Rasulullaah ﷺ) is insane? No (none of the above are reasons for their rejection), but (the fact is that) he (Rasulullaah ﷺ) has brought the truth to them and most of them dislike (accepting) the truth (the true Deen).
Tafsir (excerpt) — Tafsir Usmani
The Prophet ﷺ is the conveyer of the truth: that is, are the words of the crazed and the insane ever so pure and true? The reality is that these people too were saying it only with their tongues, while their hearts knew that whatever he had brought was undoubtedly the truth.
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