ثُمَّ بَعَثۡنٰهُمۡ لِنَعۡلَمَ اَيُّ الۡحِزۡبَيۡنِ اَحۡصٰي لِمَا لَبِثُوۡ٘ا اَمَدًاࣖ‏

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