Genesis 30:37-43

New International Version

³⁷ Jacob, however, took fresh-cut branches from poplar, almond^(A) and plane trees^(B) and made white stripes on them by peeling the bark and exposing the white inner wood of the branches.^{(C) 38} Then he placed the peeled branches^(D) in all the watering troughs,^(E) so that they would be directly in front of the flocks when they came to drink. When the flocks were in heat^(F) and came to drink, ³⁹ they mated in front of the branches.^(G) And they bore young that were streaked or speckled or spotted.^{(H) 40} Jacob set apart the young of the flock by themselves, but made the rest face the streaked and dark-colored animals^(I) that belonged to Laban. Thus he made separate flocks for himself and did not put them with Laban’s animals. ⁴¹ Whenever the stronger females were in heat,^(J) Jacob would place the branches in the troughs in front of the animals so they would mate near the branches,^{(K) 42} but if the animals were weak, he would not place them there. So the weak animals went to Laban and the strong ones to Jacob.^{(L) 43} In this way the man grew exceedingly prosperous and came to own large flocks, and female and male servants, and camels and donkeys.^(M)