Genesis 30:38
King James Version
“And he set the rods which he had pilled 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.”
Context
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 brown among the sheep, and gave 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 green poplar, and of the hazel and chesnut tree; and pilled white strakes in them, and made the white appear which in the rods.
38And he set the rods which he had pilled 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.
39And the flocks conceived before the rods, and brought forth cattle ringstraked, speckled, and spotted.
40And Jacob did separate the lambs, and set the faces of the flocks toward the ringstraked, and all the brown in the flock of Laban; and he put his own flocks by themselves, and put them not unto Laban’s cattle.
41And it came to pass, whensoever the stronger cattle did conceive, that Jacob laid the rods before the eyes of the cattle in the gutters, that they might conceive among the rods.