Genesis 15:10 WEB

⁸  He said, 'Lord Yahweh, how will I know that I will inherit it?'

⁹  He said to him, 'Take me a heifer three years old, a female goat three years old, a ram three years old, a turtle-dove, and a young pigeon.'

¹⁰  He took him all these, and divided them in the middle, and laid each half opposite the other; but he didn't divide the birds.

¹¹  The birds of prey came down on the carcasses, and Abram drove them away.

¹²  When the sun was going down, a deep sleep fell on Abram. Now terror and great darkness fell on him.