Translation:Mishnah/Seder Moed/Tractate Sukkah/Chapter 1/11
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Mishnah 11
If one makes his succah like a hut, or he leaned against a wall, in either case R'Eliezer rules that it is invalid because it has no roof, but the Sages rule that it is valid.
The law of a large reed mat:
If one made it for reclining purposes, it is susceptible to tumah and we may not cover a succah with it. But if he made it for covering a succah, we may indeed cover a succah with it, and it is not susceptible to tumah.
But R'Eliezer says: Whether the mat is small or large, if he made it for reclining, it is susceptible to tumah, and we may not cover a succah with it; but if he made it for covering a succah, we may indeed cover with it, and it is not susceptible to tumah.