ציטירנדיקער פּירוש אויף הושע 1:8

ON THE TORAH. Rav: had Israel not accepted the Torah, the heavens and the earth would not have been created, as per the verse “If not for my covenant, etc.” (Jeremiah 33:25). Rav was led to this interpretation because he was bothered by the superfluousness of “the sacrificial service, and acts of kindness” in the text, for both of these are commandments, the fulfillment of which is already included in “the Torah”; he therefore understood that the Torah must refer not to the Torah itself but to its acceptance. The verse in Jeremiah is now read as “if not for my covenant which you have accepted, I would not have established the day or the night, nor even the laws of the heavens and the earth.” See the mishna in Nedarim 3:11 for a similar interpretive turn.
The difficulty with this is that the mishna is using the expression “the world stands on three things” to convey the importance of doing those things, and in Rav’s reading “the Torah” refers not to anything that one ought to do but to a historical event, and is out of place here. It seems, therefore, that “the Torah” here refers to the study and learning of Torah as opposed to the act of following its laws. The verse in Jeremiah, then, reads “if not for the study of my covenant by day and night, etc,” as per the verse “You shall study it day and night” (Hosea 1:8).
The words “had Israel not accepted the Torah” do not appear in Rashi’s commentary, which simply reads: On the Torah, as per the verse “If not for my covenant, etc.”.