Al-Qasas 28:27

قَالَ إِنِّيٓ أُرِيدُ أَنۡ أُنكِحَكَ إِحۡدَى ٱبۡنَتَيَّ هَٰتَيۡنِ عَلَىٰٓ أَن تَأۡجُرَنِي ثَمَٰنِيَ حِجَجٖۖ فَإِنۡ أَتۡمَمۡتَ عَشۡرٗا فَمِنۡ عِندِكَۖ وَمَآ أُرِيدُ أَنۡ أَشُقَّ عَلَيۡكَۚ سَتَجِدُنِيٓ إِن شَآءَ ٱللَّهُ مِنَ ٱلصَّـٰلِحِينَ 27

He said, "Indeed, I wish to wed you one of these, my two daughters, on [the condition] that you serve me for eight years; but if you complete ten, it will be [as a favor] from you. And I do not wish to put you in difficulty. You will find me, if Allah wills, from among the righteous