Genesis 30:31-33

“What wages do you want?” Laban asked again. Jacob replied, “Don’t give me anything. Just do this one thing, and I’ll continue to tend and watch over your flocks. Let me inspect your flocks today and remove all the sheep and goats that are speckled or spotted, along with all the black sheep. Give these to me as my wages. In the future, when you check on the animals you have given me as my wages, you’ll see that I have been honest. If you find in my flock any goats without speckles or spots, or any sheep that are not black, you will know that I have stolen them from you.”