Erchin 7:5-8:1

Erchin 7:5

If a person bought a field from his father, who subsequently died, and he then consecrated the field, it is considered a hereditary field; if he first consecrated it and only after did the father die, it is considered a field that was purchased. This is the opinion of Rabbi Meir; Rabbi Yehuda and Rabbi Shimon say that the latter is likewise considered a hereditary field. Their opinion is based on Leviticus 27:22: “If a person dedicates to Hashem a field that he bought, that is not one of his hereditary fields….” This refers to a field that isn’t possible to be one of his hereditary fields, to the exclusion of one that is. A field that was purchased doesn’t go to the kohanim in the Jubilee year because a person cannot consecrate something he doesn’t own. Kohanim and Leviim can consecrate and redeem at any time, both before and after the Jubilee.

Erchin 8:1

If a person consecrates his field at a time when the Jubilee is not observed, they tell him to make an offer to redeem it before they auction it off. This is because only the owner pays the extra fifth (representing a higher payment to the Temple). It once happened that a person consecrated his field because it was of low quality and they told him to make the first offer. He bid one isar (a very small amount); Rabbi Yosi says that he bid a single egg because consecrated property can be redeemed with money or with something worth money. The Temple treasurer accepted his bid, costing him an isar and causing him to retake possession of the field.