الكهف — Al-Kahf Ayat 12

ثُمَّ بَعَثْنٰهُمْ لِنَعْلَمَ اَيُّ الْحِزْبَيْنِ اَحْصٰى لِمَا لَبِثُوْٓا اَمَدًا ࣖ

Ṡumma ba‘aṡnāhum lina‘lama ayyul-ḥizbaini aḥṣā limā labiṡū amadā(n).

"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."