And Yaakov vowed a vow, saying, “If God will be with me and will guard me on this way that I am going, and will give me bread to eat and clothing to wear,
English: They said: Yaakov did not set a condition upon the Holy One, blessed be He; rather he asked that the promises already given to him be fulfilled.
On the daf / in context: The “if” of the neder is read as a request for the realization of the existing Divine promises rather than a bargain.
Type of Learning
Derash on the verse (midrashic) — not a formal named middah of the 13. The conditional language is softened into a plea for fulfillment of prior promises.
What Is Learned
Yaakov’s neder is not a commercial condition but a request that Hashem’s already-given promises be kept.