(כד מה) “בדרך תרגזו אל אלהם ויאמר וילכו אחיו את וישלח”
Harav Shlomo of Bobov said:
Tzaddikim have always parted from those who come to see them with a brachah of “zeit gezunt un shtark” [be healthy and strong]. This brachah contains deep meaning, and it is based on the directive of Chazal (Brachos 31a): “A person should only part from his friend with a word of halachah, because that is how he remembers him.” In order to fulfill this, tzaddikim continue to bless with the parting brachah about strength and fortitude, so through that the ones taking leave can fulfill the first halachah in Shulchan Aruch: “He should overcome like a lion to stand in the morning to serve his Creator,” and thus we find that they part with a dvar halachah.
Siach Tzaddikim, p. 385
