Saba 34:46

۞قُلۡ إِنَّمَآ أَعِظُكُم بِوَٰحِدَةٍۖ أَن تَقُومُواْ لِلَّهِ مَثۡنَىٰ وَفُرَٰدَىٰ ثُمَّ تَتَفَكَّرُواْۚ مَا بِصَاحِبِكُم مِّن جِنَّةٍۚ إِنۡ هُوَ إِلَّا نَذِيرࣱ لَّكُم بَيۡنَ يَدَيۡ عَذَابࣲ شَدِيدࣲ‏۝٤٦

46. Say, "I only advise you of one [thing] - that you stand for Allah, [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