Genesis 15:9-10

King James Version

⁹ And he said unto him, Take me an heifer of three years old, and a she goat of three years old, and a ram of three years old, and a turtledove, and a young pigeon.

¹⁰ And he took unto him all these, and divided them in the midst, and laid each piece one against another: but the birds divided he not.