Surah Al-Kahf Verse 12 - English Translation by Muhammad Asad
Surah Al-Kahfثُمَّ بَعَثۡنَٰهُمۡ لِنَعۡلَمَ أَيُّ ٱلۡحِزۡبَيۡنِ أَحۡصَىٰ لِمَا لَبِثُوٓاْ أَمَدٗا
and then We awakened them [and We did all this] so that We might mark out [to the world] which of the two points of view showed a better comprehension of the time-span during which they had remained in this state