Sukkah 31A

הושענא! מעיקרא, נמי לאסא ״הושענא״ קרו ליה.

it is called hoshana, which is a term used to describe the 4 species. The Talmud answers: This is not a full-fledged change of name, as occasionally it also happens that they initially refer to a myrtle branch as a hoshana while it is attached to the tree.

תנו רבנן: סוכה גזולה, והמסכך ברשות הרבים ⁠— רבי אליעזר פוסל, וחכמים מכשירין.

§ A baraita states: With regard to a stolen sukka and with regard to one who roofs a sukka in the public domain, which is tantamount to robbing land from the public, R' Eliezer deems these sukkot unfit for use in fulfillment of the mitzva, and the Rabbis deem them fit.

אמר רב נחמן: מחלוקת בשתוקף את חבירו והוציאו מסוכתו. ורבי אליעזר לטעמיה דאמר: אין אדם יוצא ידי חובתו בסוכתו של חבירו. אי קרקע נגזלת ⁠— סוכה גזולה היא. ואי נמי קרקע אינה נגזלת ⁠— סוכה שאולה היא.

Rav Naḥman said: This dispute is limited to a case where one assaults another and forcibly evicts him from his sukka, and takes his place in the sukka. In that case, R' Eliezer deems the sukka unfit. And R' Eliezer conforms to his own reasoning, as he said: A person does not fulfill his obligation with the sukka of another. Therefore, in any event, he does not fulfill his obligation with it. If land can be stolen and acquired by the robber, the sukka from which he evicted the owner is a stolen sukka. And if indeed land cannot be stolen, nevertheless, the robber does not fulfill his obligation according to R' Eliezer, as it is a borrowed sukka.

ורבנן לטעמייהו, דאמרי: אדם יוצא ידי חובתו בסוכתו של חבירו, וקרקע אינה נגזלת, וסוכה שאולה היא.

And the Rabbis conform to their reasoning, as they said: A person fulfills his obligation with the sukka of another. And since land cannot be stolen and the sukka is merely a borrowed sukka and not a stolen one, the robber fulfills his obligation, despite the fact that he committed a reprehensible act.