Genesis 30:38-40

Complete Jewish Bible

³⁸ Then he set the rods he had peeled upright in the watering troughs, so that the animals would see them when they came to drink. And since they bred when they came to drink, ³⁹ the animals mated in sight of the rods and gave birth to streaked, speckled and spotted young. 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.