TT #62 · Parshas Shemini · Aliyah 3 · Passuk 9
Chabad.org — Vayikra Chapter 10 with Rashi
English: “A statute forever”: the phrase is compared with the same phrase concerning priests lacking their garments; just as that rule applies to every service, so the wine prohibition applies to every priestly service.
Zevachim 18a.
E-Daf.com — Zevachim 18a (Tsurras Hadaf)
English: “A statute forever.” The same expression is used regarding priests who lack their garments: just as that rule applies without distinguishing between services, so the prohibition applies without distinguishing between services.
Gezeirah shavah — “a law forever” is compared with the corresponding phrase concerning priests without their proper garments, extending the rule to every priestly service.
This Torah Temimah note derives a practical or interpretive teaching from the wording of Vayikra 10:09, connecting the verse to the cited rabbinic source.