Al-A'raaf • BN-TAFSEER-IBN-E-KASEER
﴿ 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.