Genesis 30:41–43

41 Whenever the stronger of the flock were breeding, Jacob placed the branches in the troughs, in full view of the flocks, and they would breed in front of the branches. 42 As for the weaklings of the flocks, he did not put out the branches. So it turned out that the weak sheep belonged to Laban and the stronger ones to Jacob. 43 And the man became very rich.A He had many flocks, female and male slaves, and camels and donkeys.b