26:49
قَالَ ءَامَنتُمْ لَهُۥ قَبْلَ أَنْ ءَاذَنَ لَكُمْ ۖ إِنَّهُۥ لَكَبِيرُكُمُ ٱلَّذِى عَلَّمَكُمُ ٱلسِّحْرَ فَلَسَوْفَ تَعْلَمُونَ ۚ لَأُقَطِّعَنَّ أَيْدِيَكُمْ وَأَرْجُلَكُم مِّنْ خِلَـٰفٍ وَلَأُصَلِّبَنَّكُمْ أَجْمَعِينَ
[Pharaoh] said, "You believed Moses before I gave you permission. Indeed, he is your leader who has taught you magic, but you are going to know. I will surely cut off your hands and your feet on opposite sides, and I will surely crucify you all."
Context in Surah Ash-Shu'ara
Nearby ayahs help place verse 26:49 in sequence and meaning.
قَالُوٓا۟ ءَامَنَّا بِرَبِّ ٱلْعَـٰلَمِينَ
They said, "We have believed in the Lord of the worlds,
رَبِّ مُوسَىٰ وَهَـٰرُونَ
The Lord of Moses and Aaron."
قَالُوا۟ لَا ضَيْرَ ۖ إِنَّآ إِلَىٰ رَبِّنَا مُنقَلِبُونَ
They said, "No harm. Indeed, to our Lord we will return.
إِنَّا نَطْمَعُ أَن يَغْفِرَ لَنَا رَبُّنَا خَطَـٰيَـٰنَآ أَن كُنَّآ أَوَّلَ ٱلْمُؤْمِنِينَ
Indeed, we aspire that our Lord will forgive us our sins because we were the first of the believers."