﴿ وَقَالُوا۟ مَهْمَا تَأْتِنَا بِهِۦ مِنْ ءَايَةٍۢ لِّتَسْحَرَنَا بِهَا فَمَا نَحْنُ لَكَ بِمُؤْمِنِينَ ﴾

“And they said [unto Moses]: "Whatever sign thou mayest produce before us in order to cast a spell upon us thereby, we shall not believe thee!"”

Please check ayah 7:135 for complete tafsir.