﴿ وَإِذَا بَدَّلْنَآ ءَايَةًۭ مَّكَانَ ءَايَةٍۢ ۙ وَٱللَّهُ أَعْلَمُ بِمَا يُنَزِّلُ قَالُوٓا۟ إِنَّمَآ أَنتَ مُفْتَرٍۭ ۚ بَلْ أَكْثَرُهُمْ لَا يَعْلَمُونَ ﴾

“And now that We replace one message by another -since God is fully aware of what He bestows from on high, step by step - they [who deny the truth] are wont to say, "Thou but inventest it!" Nay, but most of them do not understand it!”

Please check ayah 16:102 for complete tafsir.