مَآ أَنتَ إِلَّا بَشَرٞ مِّثۡلُنَا فَأۡتِ بِـَٔايَةٍ إِن كُنتَ مِنَ ٱلصَّـٰدِقِينَ

You are just a human being like us. So bring us a sign, should you be truthful.’