The People of the Book also said that when Jacob came to his maternal uncle in the land of Haran, his uncle had two daughters. The elder one was called Leah (Lia) and the younger one was Rachel (Rahil). The latter was the better and lovelier of the two. His uncle agreed to marry his daughter to him on the condition that Jacob pasture his sheep for seven years.
After a period of time, his uncle prepared a feast and gathered people for the wedding. He married Leah, his elder daughter, to him at night. She was weak-sighted and ugly. When morning came, Jacob discovered that she was Leah and he complained to his uncle: 'You deceived me; I was engaged to Rachel and you married me to Leah." His uncle said: "It is not our tradition to marry the younger daughter before the elder daughter. However, if you love her sister, work another seven years and I will marry you to both of them."
Jacob worked for seven years and then married Rachel. It was acceptable in their time, as described in the Torah, for a man to marry two sisters. Laban gave a female slave to each daughter. Leah's slave was called Zilpah and Rachel's slave was called Bilha.