Surat Ash-Shu'araa (The Poets) - الشعراء

وَمَآ أَنتَ إِلَّا بَشَرٌ مِّثْلُنَا وَإِن نَّظُنُّكَ لَمِنَ ٱلْكَٰذِبِينَ ﴿١٨٦﴾

And you are naught but a mortal like ourselves, and we know you to be certainly of the liars.