﴿ ۞ وَيَطُوفُ عَلَيْهِمْ غِلْمَانٌۭ لَّهُمْ كَأَنَّهُمْ لُؤْلُؤٌۭ مَّكْنُونٌۭ ﴾

“And they will be waited upon by [immortal] youths, [as if they were children] of their own, [as pure] as if they were pearls hidden in their shells.”

Please check ayah 52:28 for complete tafsir.