Numbers 7:3
And they brought their offering before the LORD, six covered wagons, and twelve oxen; a wagon for two of the princes, and for each one an ox: and they brought them before the tabernacle.
Torrey's Topical Textbook—AKJV

1 Samuel 6:7
Now therefore make a new cart, and take two milk cows, on which there has come no yoke, and tie the cows to the cart, and bring their calves home from them:
Torrey's Topical Textbook—AKJV