তখন আমি কয়েক বছরের জন্যে গুহায় তাদের কানের উপর নিদ্রার পর্দা ফেলে দেই।
Therefore We covered up their (sense of) hearing (causing them, to go in deep sleep) in the Cave for a number of years.
فَضَرَبْنَا عَلَى آذَانِهِمْ فِي الْكَهْفِ سِنِينَ عَدَدًا
Fadarabna AAala athanihim fee alkahfi sineena AAadadan
YUSUFALI: Then We draw (a veil) over their ears, for a number of years, in the Cave, (so that they heard not):
PICKTHAL: Then We sealed up their hearing in the Cave for a number of years.
SHAKIR: So We prevented them from hearing in the cave for a number of years.
KHALIFA: We then sealed their ears in the cave for a predetermined number of years.