Gen Genesis1. Mósebók, chapterkafli Book of GenesisFyrsta Mósebók, chapterkafli 30

And he set the rods which he had pealed 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.

And the flocks conceived before the rods, and brought forth cattle marked with circular stripes, speckled, and spotted.