LEV931 The greatest sacrifice is told of a certain Rabbi who used to save the whole of the year enough money to enable him to buy an Ethrog for the Feast of Tabernacles [this verse]. When he was in possession of six rubles he made a special journey from his village to Brody, to buy the Ethrog. But on the way he met a poor man who made a livelihood by means of his horse-cart, on which he carried water for the neighborhood. Unfortunately, the horse died on the way. There upon the Rabbi gave him six rubles to buy another beast, saying, "What is the difference? Ethrog is a command of God, and to help this poor man is also a command of God." Naturally, a miracle happened afterwards. The Rabbi was presented by some rich man with a fine Ethrog for the feast. I will only remark that charity belongs, according to the mystics, to the Commandments that work a certain rebirth in man, or rather give a new soul to those who make strenuous efforts to fulfill them.