﴿ فَلْيَأْتُوا۟ بِحَدِيثٍۢ مِّثْلِهِۦٓ إِن كَانُوا۟ صَٰدِقِينَ ﴾

“But then, [if they deem it the work of a mere mortal,] let them produce another discourse like it - if what they say be true!”

(Then let them produce speech the like thereof) let them produce a Qur'an like the Qur'an of Muhammad (pbuh) (if they are truthful) that Muhammad has invented the Qur'an: