תלמוד על דברים 22:10

“A person is permitted to plough and draw with all of them.” It is written (Deut. 22:10): “Do not plough with an ox and a donkey together.” (Sifri Deut. 231) You may not plough with an ox and a donkey but you may plough with an ox and a human, a donkey with a human.