Genesis 30:39-41

Amplified Bible

³⁹ So the flocks mated and conceived by the branches, and the flocks ^[a]gave birth to streaked, speckled, and spotted offspring. ⁴⁰ Jacob separated the lambs, and [as he had done with the peeled branches] he made the flocks face toward the streaked and all the dark or black in the [new] flock of Laban; and he put his own herds apart by themselves and did not put them [where they could breed] with Laban’s flock. ⁴¹ Furthermore, whenever the stronger [animals] of the flocks were breeding, Jacob would place the branches in the sight of the flock in the watering troughs, so that they would mate and conceive among the branches;