قُلۡ اِنَّمَاۤ اَعِظُكُمۡ بِوَاحِدَةٍ ۚ اَنۡ تَقُوۡمُوۡا لِلّٰهِ مَثۡنٰى وَفُرَادٰى ثُمَّ تَتَفَكَّرُوۡا مَا بِصَاحِبِكُمۡ مِّنۡ جِنَّةٍ ؕ اِنۡ هُوَ اِلَّا نَذِيۡرٌ لَّـكُمۡ بَيۡنَ يَدَىۡ عَذَابٍ شَدِيۡدٍ
Qul innama aAAithukumbiwahidatin an taqoomoo lillahi mathna wafuradathumma tatafakkaroo ma bisahibikum min jinnatin inhuwa illa natheerun lakum bayna yaday AAathabinshadeed
Say, "I only advise you of one thing - that you stand for Allāh, seeking truth in pairs and individually, and then give thought." There is not in your companion any madness. He is only a warner to you before a severe punishment.