Quran 34, Saba' (Sheba) ⓘ

34:46Say (unto them, O Muhammad): I exhort you unto one thing only: that ye awake, for Allah's sake, by twos and singly, and then reflect: There is no madness in your comrade. He is naught else than a warner unto you in face of a terrific doom.

قُلْ إِنَّمَا أَعِظُكُمْ بِوَاحِدَةٍ أَنْ تَقُومُوا لِلَّهِ مَثْنَى وَفُرَادَى ثُمَّ تَتَفَكَّرُوا مَا بِصَاحِبِكُمْ مِنْ جِنَّةٍ إِنْ هُوَ إِلَّا نَذِيرٌ لَكُمْ بَيْنَ يَدَيْ عَذَابٍ شَدِيدٍ