54:28
وَنَبِّئْهُمْ أَنَّ ٱلْمَآءَ قِسْمَةٌۢ بَيْنَهُمْ ۖ كُلُّ شِرْبٍۢ مُّحْتَضَرٌۭ
Wa nabbi'hum annal maaa'a qismatum bainahum kullu shirbim muhtadar
And tell them that the water is to be divided between them: Each one's right to drink being brought forward (by suitable turns).