Surah Saba 34:46

۞ قُلْ إِنَّمَآ أَعِظُكُم بِوَٰحِدَةٍ ۖ أَن تَقُومُوا۟ لِلَّهِ مَثْنَىٰ وَفُرَٰدَىٰ ثُمَّ تَتَفَكَّرُوا۟ ۚ مَا بِصَاحِبِكُم مِّن جِنَّةٍ ۚ إِنْ هُوَ إِلَّا نَذِيرٌ لَّكُم بَيْنَ يَدَىْ عَذَابٍ شَدِيدٍ

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.

Translation: Saheeh International

Tafsir

Say ‘I will give you just one piece of admonition namely that you rise up for God in other words for His sake in twos and individually and then reflect and realise that there is no madness in your companion Muhammad (s). …

Excerpt from Tafsir al-Jalalayn, commentary on 34:46, via Quran.com. The reader has the full commentary and 9 more tafsirs.