Book of Jubilees 28:17
When Rachel saw that Leah had given birth to four sons for Jacob — Reuben, Simeon, Levi, and Judah — she said to him: ‘Go in to my servant girl Bilhah. Then she will become pregnant and give birth to a son for me’.
When Rachel saw that Leah had given birth to four sons for Jacob — Reuben, Simeon, Levi, and Judah — she said to him: ‘Go in to my servant girl Bilhah. Then she will become pregnant and give birth to a son for me’.