Genesis

³⁴And Laban said, Behold, I would it might be according to thy word. ³⁵And he removed that day the he-goats that were ringstraked and spotted, and all the she-goats that were speckled and spotted, every one that had white in it, and all the black ones among the sheep, and gave them into the hand of his sons; ³⁶and he set three days' journey betwixt himself and Jacob: and Jacob fed the rest of Laban's flocks. ³⁷And Jacob took him rods of fresh poplar, and of the almond and of the plane tree; and peeled white strakes in them, and made the white appear which was in the rods. ³⁸And he set the rods which he had peeled over against the flocks in the gutters in the watering troughs where the flocks came to drink; and they conceived when they came to drink. ³⁹And the flocks conceived before the rods, and the flocks brought forth ringstraked, speckled, and spotted. ⁴⁰And Jacob separated the lambs, and set the faces of the flocks toward the ringstraked and all the black in the flock of Laban; and he put his own droves apart, and put them not unto Laban's flock.