R. Yudan was very rich and very charitable. He used to run after the collectors of charity. He became
poor at last and had only a small piece of land and a cow. The Rabbis Eliezer, Joshua and Akiba were one day collecting alms. Yudan was greatly ashamed at having nothing to give, but upon the advice of his wife, he sold half of his field and gave to the collection. While ploughing the field, the cow fell into a hole and broke its leg. He found in the hole a great treasure and was thus rewarded for his charity.