Ash-Shu'araa • EN-TAFSIR-IBN-ABBAS
﴿ قَالَ هَٰذِهِۦ نَاقَةٌۭ لَّهَا شِرْبٌۭ وَلَكُمْ شِرْبُ يَوْمٍۢ مَّعْلُومٍۢ ﴾
“Replied he: “This she-camel shall have a share of water, and you shall have a share of water, on the days appointed [therefor];”
(He said) Salih said to them: ((Behold) this she-camel) she is a sign that I am sent as a prophet to you. (She hath the right to drink (at the well)) one day, (and ye have the right to drink) another day, ((each) on an appointed day) i.e. in alternate days: one day for you and one day for her.