The Rebbe explains that the mitzvah of Sukkah requires daas—internalizing Hashem’s protection during Yetziat Mitzrayim. He cites the Frierdiker Rebbe, who describes Yetziat Mitzrayim as breaking limitations and Kriyat Yam Suf as overcoming obstacles with mesirus nefesh. The sukkah strengthens spiritual growth, with Sukkot and the Chassidic Ushpizin providing lasting strength.

https://www.torahrecordings.com/rebbe/004_igros_kodesh/tishrei/780