Mishnà su Numeri 35:11

One who returns a debt [after] the seventh year, the [creditor] must say to [the debtor]: “I remit it.” But [the debtor] should say: “Even so [I will repay it].” [The creditor] may then accept it from him, because it says: “And this is the word of the release” (Deuteronomy 15:2). Similarly, when [an accidental] killer has been exiled to a city of refuge, and the citizens want to honor him, he must say to them: “I am a murderer.” If they say: “Even so, [we want to honor you], then he may accept [the honor] from them, because it says: “And this is the word of the murderer” (Deuteronomy 19:4).