107 Gittin 5/1-4

(1) [Compensation for] damages are assessed from the highest [quality field]; and for a creditor, from the medium [quality field]; and for the payment of a ketubah [monetary settlement payable to a married woman upon divorce or the death of her husband], from the lowest [quality field]. Rabbi Meir says, "Even the ketubah [is to be paid] from the medium [quality field.]"

(2) We do not collect[ payment] from mortgaged property [in the hands of others], when there is unmortgaged property [i.e, belonging to the debtor], even if it is from the lowest quality. We do not collect from the property of orphans except for from the lowest quality.

(3) We do not extract [payment] for usufruct, for the improvement of the land, or for the food of a wife and daughters [of a former marriage] from mortgaged property, due to repairing the world [Tikkun HaOlam]. And we do not impose an oath upon the finder of an object due to Tikkun HaOlam.

(4) [With regard to] orphans who are dependent on a [particular] homeowner, or [in the case that] their father had appointed a guardian for them, these people must tithe the [orphans'] fruit. A guardian who was appointed by the father, must take an oath; if the court appointed him need not take an oath. Abba Shaul says, "It is just the reverse." [With regard to] one who renders [fruit belonging to another] ritually impure, or mixes it [with terumah, a portion of a crop given to a Kohen which becomes holy upon separation, and can only be consumed by Kohanim or their household], or mixes [his wine with other wine used for idolatrous] libations. [If he did so] unwittingly, he is exempt [from paying damages]; if on purpose, he is liable. Kohanim who purposely render sacrifices ‏pigul [a sacrifice that becomes unfit, due to the intention of the officiating priest, while offering it, to consume it outside its permitted time], are liable.