חַ֧ג הַסֻּכֹּ֛ת תַּעֲשֶׂ֥ה לְךָ֖ שִׁבְעַ֣ת יָמִ֑ים בְּאָ֨סְפְּךָ֔ מִֽגָּרְנְךָ֖ וּמִיִּקְבֶֽךָ׃
Будешь хранить праздник скиний семь дней, после чего соберешься с гумна и из твоего вина.
Rashi
באספך [THOU SHALT KEEP THE FESTIVAL OF TABERNACLES …] AFTER THAT THOU HAST GATHERED IN THE PRODUCE — i.e. at the usual harvest time, when thou bringest into the house the summer fruits. Another explanation is: באספך מגרנך ומיקבך teaches that one should cover the Succah only with the פסולת (lit., the chips, — that which falls off) of the barn and the wine-press [i.e. with vegetable matter] (Rosh Hashanah 13a; Sukkah 12a).
Ibn Ezra
When you gather in from your threshing floor and your winepress whence the holiday is also called “the feast of ingathering” [Exodus 23: 16] .
Rashbam
באספך מגרנך ומיקבך, I have already explained the connection between the word באספך and חג האסיף etc., in my commentary on Leviticus 23,43.