Zevachim 57B

ואיבעית אימא: חוץ מפנים בחד זימנא גמיר.

The Talmud suggests: And if you wish, say there is a different resolution: The sprinkling outside is derived from the sprinkling inside, all at once. There are not two comparisons here, one derived from the other, but rather a single, complex juxtaposition, from which all of the relevant halakhot are derived.

בשלמא למאן דאמר [לא] הוי היקש, היינו דכתיב: ״ממושבתיכם תביאו לחם תנופה״⁠ –

The Talmud comments: Granted, according to the one who says that a matter derived via a juxtaposition and another principle is not a juxtaposition, this is the reason that it is written with regard to the offering brought on Shavuot: “You should bring out of your dwellings two wave loaves of 2/10ths of an ephah; they should be of fine flour” (Leviticus 23:17).

שאין תלמוד לומר ״תביאו״, מה תלמוד לומר ״תביאו״? כל שאתה מביא ממקום (למקום) אחר הרי הוא כזה; מה להלן עשרון לחלה, אף כאן עשרון לחלה.

Since apparently there is no need for the verse to state: “You should bring,” as it already states: “And you should present a new meal offering to YHWH” (Leviticus 23:16), why must the verse state: “You should bring”? It states this to teach that anything that you bring from another place that is similar to this offering, i.e., the leavened bread that accompanies a thanks offering, should be prepared like this. Just as there, with regard to the two loaves, they must be prepared from 1/10th of an ephah of flour for each loaf, so too here, each of the 10 loaves of leavened bread that accompany a thanks offering must be prepared from 1/10th of an ephah of flour for each loaf.

אי ⁠– מה להלן שני עשרונים, אף כאן שני עשרונים?! תלמוד לומר: ״תהיינה״.

If they are compared, why not say that just as there, with regard to the two loaves, the total amount of flour is 2/10ths of an ephah, so too here, with regard to the 10 loaves that accompany a thanks offering, the total amount of flour for all 10 should be 2/10ths of an ephah? To counter this comparison, the verse states: “They should be,” to serve as a restriction and teach that only these two loaves amount to a total of 2/10ths of an ephah, but the bread accompanying the thanks offering does not amount to 2/10ths of an ephah.