헌신적인 노파가 기른 새까만 황소로서의 과거생 보살로, 여울을 건너는 상인의 수레를 끄는 것을 도왔으나 약속된 삯의 절반을 속아 받지 못하자 전액을 지불받을 때까지 움직이기를 거부했다.

The Bodhisatta in a past life as a jet-black bull, reared by a devoted old woman, who helped a merchant pull his carts across a ford and, after being cheated of half his promised wage, refused to move until paid in full.