His statement: "And there will circulate among them young boys made eternal" means they will never die. "When you see them, you would think them" meaning: you would liken them to "scattered pearls" in the clarity of their complexions. And 'scattered' is the best state they can be in.
قَوْلُهُ: ﴿وَيَطُوفُ عَلَيْهِمْ وِلْدَانٌ مُخَلَّدُونَ﴾ لَا يَمُوتُونَ أَبَدًا ﴿إِذَا رَأَيْتَهُمْ حسبتهم﴾ أَي: شبهتهم ﴿لؤلؤا منثورا﴾ فِي صَفَاءِ أَلْوَانِهِمْ وَالْمَنْثُورُ: أَحْسَنُ مَا يكون
