Daf Yomi - Sukkah 4 - Sitting or Standing?

If the sukkah is higher than ten tefachim and some of the leaves from the schach hang down within ten tefachim and those leaves by itself would not have more shade than sun, there is an argument if the sukkah is kosher or not. Rava maintains that it is not valid for this is considered a dirah seruchah.

The Reshash asks how can a sukkah which is precisely ten tefachim high be valid, the height of a regular person is eighteen tefachim? A person will not be able to stand straight in this sukkah and it will be extremely uncomfortable?

Sheorim Mitzuyanim Bhalacha answers that this is not a question for the obligation is to sit in a sukkah, not to stand. He sites a proof to this from the Rambam who rules that one should recite the brocha standing and then sit in order for the brocha to be recited before the performance of the mitzva. Even according to the Rishonim who disagree and hold that one can fulfill the mitzva by standing as well, they admit that the primary obligation is to sit as the Torah explicitly states basukkos teishvu.