Genesis 30:36

33 So shall my righteousness answer for me in time to come, when it shall come for my hire before thy face: every one that [is] not speckled and spotted among the goats, and brown among the sheep, that shall be accounted stolen with me.

34 And Laban said, Behold, I would it might be according to thy word.

35 And he removed that day the he-goats that were ring-streaked and spotted, and all the she-goats that were speckled and spotted; every one that had [some] white in it, and all the brown among the sheep, and gave [them] into the hands of his sons.

36 And he set three days' journey between himself and Jacob: and Jacob fed the rest of Laban's flocks.

37 And Jacob took to him rods of green poplar, and of the hazel and chesnut-tree; and peeled white streaks in them, and made the white appear which [was] in the rods.

38 And he set the rods, which he had peeled, before the flocks in the gutters in the watering-troughs, when the flocks came to drink, that they should conceive when they came to drink.

39 And the flocks conceived before the rods, and brought forth cattle ring-streaked, speckled, and spotted.