Nachschlagewerk zu Dewarim 15:14

If a man owned a Jewish slave and freed him at the end of six years, the Torah commanded that the slave should not be sent away empty handed but that he should be given gifts from the herd, the threshing floor and the wine cellar. (Deut. 15:14.) Rabbi Ishmael said, “Come and see how great is the mercy of the Creator who says to a man, ‘If a Jewish slave has worked for you and you send him away empty handed, he will have to beg from door to door or he will be forced to sell himself into slavery again. It is better that you give him some of that with which God has blessed you that he should not have to beg or to sell himself to another master.’”