Surah Al-Qamar, Verse 28

وَنَبِّئۡهُمۡ أَنَّ ٱلۡمَآءَ قِسۡمَةُۢ بَيۡنَهُمۡۖ كُلُّ شِرۡبٖ مُّحۡتَضَرٞ٢٨

wanabbi'hum anna l-māa qis'matun baynahum kullu shir'bin muḥ'taḍarun

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