وَقَالُوا مَهْمَا تَأْتِنَا بِهِۦ مِنْ ءَايَةٍ لِّتَسْحَرَنَا بِهَا فَمَا نَحْنُ لَكَ بِمُؤْمِنِينَ

Waqaloo mahma ta/tinabihi min ayatin litasharana biha famanahnu laka bimu/mineen

And they said, "No matter what sign you bring us with which to bewitch us, we will not be believers in you."