Halakhah zu Dewarim 15:3

That is that He commanded us to release monies - meaning all debts - on the sabbatical year. And that is His, may He be blessed, saying, "but that which you have with your brother, release your hand" (Deuteronomy 15:3). And this command was already repeated with His saying, "And this is the matter of the release" (Deuteronomy 15:2). And the language of the Tosefta (Gittin 36a) is, "Scripture is speaking about two releases, the release of lands and the release of monies." But by Torah law, the commandment of the release of monies is only practiced at the time that the release of land is [applicable]; and it is practiced in every place. And the regulations of this commandment have already been explained in Tractate Sheviit in the first chapter. (See Parashat Re'eh; Mishneh Torah, Sabbatical Year and the Jubilee 9.)

The commandment to press the foreigner: To press the foreigner that worships idolatry, to pay what he is obligated to us. And we should not have pity and not have mercy upon him, to prolong the loan. And about this is it stated (Deuteronomy 15:3), "You shall press the foreigner." And so did they say in Sifrei Devarim 113, "'You shall press the foreigner' - this is positive commandment."

That he release all of his loans in the seventh [year]: To abandon all of his debts on the sabbatical year. And about this is it stated (Deuteronomy 15:3), "and that which you have with your brother, release your hand." And the warning is repeated about this commandment, as it is stated (Deuteronomy 15:2), "And this is the matter of the sabbatical year, every owner of a debt shall release his hand." And they said in the Tosefta (brought in Gittin 36a), "The verse is speaking about two releases: one is the release of land and [the other] is release of monies."