Surah Al-Kahf (الكهف) Ayah 12 - Tafsir

ثُمَّ بَعَثْنَٰهُمْ 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."