وَنَبِّئۡهُمۡ اَنَّ الۡمَآءَ قِسۡمَةٌۭ بَيۡنَهُمۡۚ كُلُّ شِرۡبٍ مُّحۡتَضَرٌ

And inform them that the water is shared between them, each [day of] drink attended [by turn]