Qur'ān 18:12 · Al-Kahf (الكهف)

ثُمَّ بَعَثْنَـٰهُمْ لِنَعْلَمَ أَىُّ ٱلْحِزْبَيْنِ أَحْصَىٰ لِمَا لَبِثُوٓا۟ أَمَدًۭا

Then We awakened them that We might show which of the two factions was most precise in calculating what [extent] they had remained in time.