In yesterday's daf (Shabbos 15) the gemara discusses the gezera of טומאת ארץ העמים. Chazal made a gezera that חוץ לארץ has a din like a cemetary and therefore whoever goes to חוץ לארץ becomes a טמא מת. 
This is a serious issue for Cohanim, how are they allowed to go/live in חוץ לארץ? After all they are prohibited from being מטמא למת and chazal gave חוץ לארץ a din of טמא מת. 
The acharonim discuss what was the motivation for such a gezera? Some suggest that the motivation was ישוב ארץ ישראל, that by declaring טומאה on חוץ לארץ it would discourage people from leaving ארץ ישראל.
Which acharonim, out of curiosity for mekoros?
ReplyDeleteDoes anyone rule like this halacha l'maaseh regarding kohanim? The gezeirah doesn't seem to have taking.