Halakhah for Makkot 6:10

And one who gives over his deeds to the court and said to them, "You collect this debt for me" - [such debts] are not released. As it is stated, "and that which you have with your brother"; and this he already gave into the hand of the court. And from this reason, they, may their memory be blessed, said (Gittin 37a) that the seventh [year] does not release a debt that orphans have from others - as the [legal status] of Rabban Gamliel and his court is like the [legal status] of the father of the orphans. And after them [the same was true] of all courts in each and every generation. And [so] it is as if they gave over their deeds into the hand of the court. And also from the content of the commandment is that which they said (Makkot 3b) about one who lends to his friend for ten years, [such a loan] is not released. As when [the Torah] stated, "do not press," [it was] about a debt that is fitting to press - and this one has not yet reached its time to press. And [also] that which they said that one who stipulates about his debt from this fellow, [that it is] on condition that the seventh [year] not release it, behold it releases [nonetheless] - as he is like someone who makes a condition against what is written in the Torah. But if he said to him, "On condition that this obligation not be released, and even in the seventh year" - in this manner, the seventh [year] does not release it; since any condition upon money is upheld, as I have written in the Order of Behar Sinai on the commandment to not lend with interest to an Israelite (Sefer HaChinukh 339). And the rest of its details are in Tractate Sheviit (Chapter 10).