TT · Parashas Mikeitz · Passuk 43:9
אָֽנֹכִי֙ אֶֽעֶרְבֶ֔נּוּ מִיָּדִ֖י תְּבַקְשֶׁ֑נּוּ אִם־לֹ֨א הֲבִיאֹתִ֤יו אֵלֶ֙יךָ֙ וְהִצַּגְתִּ֣יו לְפָנֶ֔יךָ וְחָטָ֥אתִֽי לְךָ֖ כׇּל־הַיָּמִֽים׃
I myself will be surety for him; you may hold me responsible: if I do not bring him back to you and set him before you, I shall stand guilty before you forever.
Torah Temimah points to Makkos 11b (and parallel).
וחטאתי לך. אמר רב יהודה אמר רב, נדוי על תנאי צריך הפרה, מנלן, מיהודה, דכתיב אם לא הביאותיו אליך וגו׳ וחטאתי.
English of Core Text: “Then I shall have sinned to you…” Rav Yehudah said in the name of Rav: A conditional niddui requires formal release. From where do we know this? From Yehudah, as it is written, “If I bring him not unto thee… then I shall have sinned…”
On the daf / in context: The Gemara learns from Yehudah’s conditional self-curse that even a niddui made on condition needs explicit release, and relates the tradition that Yehudah’s bones remained unsettled until Moshe prayed for him.
Type of Learning: Derash on the verse (Bavli sugya) — not a formal named middah of the 13.
What Is Learned: A conditional ban or self-imposed penalty requires formal release even after the condition is fulfilled, as illustrated by Yehudah’s pledge.