وَإِذا لَم تَأتِهِم بِآيَةٍ قالوا لَولَا اجتَبَيتَها ۚ قُل إِنَّما أَتَّبِعُ ما يوحىٰ إِلَيَّ مِن رَبّي ۚ هـٰذا بَصائِرُ مِن رَبِّكُم وَهُدًى وَرَحمَةٌ لِقَومٍ يُؤمِنونَ

When you don’t bring them a verse, they say, “Why can’t you make one up?” Say, “I only follow what’s revealed to me by my Lord. These are insights from your Lord, and guidance and mercy for people who believe.”