فَضَرَبْنَا عَلَىٰٓ ءَاذَانِهِمْ فِى ٱلْكَهْفِ سِنِينَ عَدَدًا
Saheeh International(11) So We cast [a cover of sleep] over their ears within the cave for a number of years.
English Translation - Rowwad Translation CenterThen We caused them to fall into a deep sleep in the cave for many years.
English Translation - Hilali and Khan11. Therefore We covered up their (sense of) hearing (causing them to go in deep sleep) in the Cave for a number of years.