القمر — Al-Qamar Ayat 28

وَنَبِّئْهُمْ اَنَّ الْمَاۤءَ قِسْمَةٌ ۢ بَيْنَهُمْۚ كُلُّ شِرْبٍ مُّحْتَضَرٌ

Wa nabbi'hum annal-mā'a qismatum bainahum, kullu syirbim muḥtaḍar(un).

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