Surah At-Tur — Ayah 34 (52:34)
فَلۡيَأۡتُواْ بِحَدِيثٖ مِّثۡلِهِۦٓ إِن كَانُواْ صَٰدِقِينَ ٣٤
English translation (Saheeh International)
Then let them produce a statement like it, if they should be truthful.
Brief commentary
So let them produce a narrative like it, even if it has been fabricated, if they are true in their claim that he has fabricated it.