TT #88 · Parshas Shemini · Aliyah 5 · Passuk 2
Chabad.org — Vayikra Chapter 11 with Rashi
English: “This is the animal”: Rabbi Yishmael’s school teaches that Hashem took representatives of each species, showed them to Moshe, and said, “This you may eat and this you may not eat.”
Chullin 42a.
E-Daf.com — Chullin 42a (Tsurras Hadaf)
וְאֶת הַחַיָּה, תַּנָּא דְּבֵי רַבִּי יִשְׁמָעֵאל, זֹאת הַחַיָּה, מְלַמֵּד שֶׁתָּפַס הַקָּדוֹשׁ בָּרוּךְ הוּא מִכָּל מִין וּמִין וְהֶרְאָה לוֹ לְמֹשֶׁה וְאָמַר לוֹ זֹאת אֱכֹל וְזֹאת לֹא תֹאכַל.
Midrashic exposition — The Chazal derives the teaching from the wording or context of the verse.
The demonstrative זאת is understood as indicating that the Holy One showed Moses the permitted and forbidden kinds, enabling Israel to recognize their signs.