فَلَعَلَّكَ تارِكٌ بَعضَ ما يوحىٰ إِلَيكَ وَضائِقٌ بِهِ صَدرُكَ أَن يَقولوا لَولا أُنزِلَ عَلَيهِ كَنزٌ أَو جاءَ مَعَهُ مَلَكٌ ۚ إِنَّما أَنتَ نَذيرٌ ۚ وَاللَّهُ عَلىٰ كُلِّ شَيءٍ وَكيلٌ

Perhaps you would leave some of what’s revealed to you, and you may be disheartened because they say, “Why has no treasure been sent down to him?” or “An angel came with him?” You are just a warner, and God is a custodian over everything.