1SA 6:7

7 Now therefore take ye, and make a new wain, and join ye therein two kine having calves, on which kine no yoke was put; and close ye their calves at home. (And so now take ye, and make ready a new wagon, and join ye it up to two cows who have calves, on which cows no yoke was ever put; and enclose ye their calves at home.)