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Unexpected Yerushalmi

Who Wants to Learn?

You’re probably familiar with the mishna in the third perek of Eiruvin:

…אם בא חכם מן המזרח עירובי למזרח בא מן המערב עירובי למערב

(A person may make an eruv techum – extending the distance he may travel outside his town on Shabbos – conditional, saying:) “If a wise man will come from the east, my eruv will (extend my techum) in the east (so I can go to meet him). If the wise man will come from the west, my eruv will be in the west.”

But you may not be aware of an alternate reading quoted in the Yerushalmi (עירובין פרק ו הלכה ג):

אית תניי תני במערב מאן דמר במזרח באילין חכימי’ מאן דמר במערב ברגיל

“There is a tana who taught: ‘(regarding the wise man who comes from the east, that he wants his eruv in the) west. The one who would say (his eruv should be in) the east refers a to (true) wise man. The one who says (his eruv should be in) the west refers to a wise man (who only teaches things everybody already knows).

The scenario presented by the alternate version gives us a man whose motivation for setting an eruv techum is to escape from the chochom, presumably so he wouldn’t need to sit through his lecture.

But this gets more interesting. Later in Eiruvin (פרק ח הלכה א), we find that one should only set an eruv techum for the purpose of a mitzva. Meaning that, according to the Yerushalmi’s version, not only is it reasonable for a person to wish to escape a chochom, but it can even be a mitzva!