And this is the manner of the release: every creditor shall release that which he has lent to his neighbor; he shall not exact it of his neighbor and his brother, because the release of Hashem has been proclaimed.
English: "And this is the manner" — It was taught: Just as the seventh year cancels a loan, so it cancels an oath, as it is said "and this is the manner (devar) of the release."
On the daf / in context: An oath concerning a monetary claim is likewise released by the onset of shemittah.
Type of Learning
Derash on the verse (Sheviis) — shemittah cancels oaths as well as loans.
What Is Learned
The shemittah year cancels not only the debt itself but also any oath that was sworn concerning it.