Then return [your] vision twice again. [Your] vision will return to you humbled while it is fatigued.
The Saheeh International Quran Translation
ثُمَّ ٱرْجِعِ ٱلْبَصَرَ كَرَّتَيْنِ يَنقَلِبْ إِلَيْكَ ٱلْبَصَرُ خَاسِئًا وَهُوَ حَسِيرٌThen return [your] vision twice again. [Your] vision will return to you humbled while it is fatigued.