Genesis 30:40-42

Complete Jewish Bible

⁴⁰ Ya‘akov divided the lambs and had the animals mate with the streaked and the brown in the flock of Lavan. He also kept his own livestock separate and did not have them mix with Lavan’s flock. ⁴¹ Whenever the hardier animals came into heat, Ya‘akov would set up the rods in the watering troughs; so that the animals would see them and conceive in front of them; ⁴² but he didn’t set up the rods in front of the weaker animals. Thus the more feeble were Lavan’s and the stronger Ya‘akov’s.