that Gemara

Remember that Gemara about fish on land dying is like Jews who don't study Torah? Turns out it's really about Torah AND Mitzvos.

Rav Yehuda says that Shmuel says: What is the meaning of that which is written: “And makes people as the fish of the sea, as the creeping things, that have no ruler over them” (Habakkuk 1:14)? Why are people compared to the fish of the sea? This serves to say to you: Just as with regard to the fish of the sea, once they arise onto dry land they die immediately; so too, with regard to people, once they separate themselves from studying words of Torah and performing the mitzvot, they die immediately.

Avodah Zara 3b

אָמַר רַב יְהוּדָה אָמַר שְׁמוּאֵל, מַאי דִּכְתִיב: ״וַתַּעֲשֶׂה אָדָם כִּדְגֵי הַיָּם כְּרֶמֶשׂ לֹא מֹשֵׁל בּוֹ״, לָמָּה נִמְשְׁלוּ בְּנֵי אָדָם כִּדְגֵי הַיָּם? לוֹמַר לָךְ: מָה דָּגִים שֶׁבַּיָּם — כֵּיוָן שֶׁעוֹלִין לַיַּבָּשָׁה מִיָּד מֵתִים, אַף בְּנֵי אָדָם — כֵּיוָן שֶׁפּוֹרְשִׁין מִדִּבְרֵי תוֹרָה וּמִן הַמִּצְוֹת מִיָּד מֵתִים.