Genesis 30:14-16

Now Reuben went in the days of wheat harvest and found mandrakes in the field, and brought them to his mother Leah. Then Rachel said to Leah, “Please give me some of your son’s mandrakes.” But she said to her, “Is it a small matter that you have taken away my husband? Would you take away my son’s mandrakes also?” And Rachel said, “Therefore he will lie with you tonight for your son’s mandrakes.” When Jacob came out of the field in the evening, Leah went out to meet him and said, “You must come in to me, for I have surely hired you with my son’s mandrakes.” And he lay with her that night.