Genesis 29:24

29:24 (Laban gave his female servant Zilpah to his daughter Leah to be her servant.) ¹ 

Genesis 46:18

46:18 These were the sons of Zilpah, whom Laban gave to Leah his daughter. She bore these to Jacob, sixteen in all.

¹ tn Heb “and Laban gave to her Zilpah his female servant, to Leah his daughter [for] a servant.” This clause gives information parenthetical to the narrative.