Ash-Shu'ara 26:154

مَآ أَنتَ إِلَّا بَشَرٌ مِّثْلُنَا فَأْتِ بِـَٔايَةٍ إِن كُنتَ مِنَ ٱلصَّـٰدِقِينَ

Mā anta illā basharun mith'lunā fati biāyatin in kunta mina l-ṣādiqīna

You are but a man like ourselves, so bring a sign, if you should be of the truthful."