Concise Quran Commentary
Addressing Moses, their father said, “Indeed, I wish to marry you to one of these two daughters of mine, on the condition that their dowry is your shepherding our livestock for eight years. If you extend the period to ten years, it would be a favour on your part and not obligatory upon you, because the agreement is only for eight years, so whatever exceeds that is optional. I do not wish to impose upon you anything that would put you in difficulty; Allah-willing, you will find me one of the pious ones who fulfils their promises and doesnot break their agreements.”