Verse 58

فَلَنَأْتِيَنَّكَ بِسِحْرٍ مِّثْلِهِۦ فَٱجْعَلْ بَيْنَنَا وَبَيْنَكَ مَوْعِدًا لَّا نُخْلِفُهُۥ نَحْنُ وَلَآ أَنتَ مَكَانًا سُوًى

We will therefore bring you similar magic, so go ahead and choose a venue for us and you that neither us nor you would violate, a neutral place.