وَنَبِّئْهُمْ أَنَّ الْمَاءَ قِسْمَةٌ بَيْنَهُمْ ۖ كُلُّ شِرْبٍ مُحْتَضَرٌ 28
And tell them that the water is to be divided between them: Each one's right to drink being brought forward (by suitable turns).