[If] one buys a field from his father — [if] his father died and he then consecrated it, it is like an ancestral field; [if] he consecrated it, and then his father died, it is like an acquired field; [these are] the words of R’ Meir. R’ Yehudah and R’ Shimon, however, say: [It is] like an ancestral field; as it says (Lev. 27:22): But if it is the field of his acquisition, which is not of the fields of his ancestral holding — [it must be] a field that does not stand to become the field of [his] ancestral holding. That excludes this [field], which stands to become the field of [his] ancestral holding. An acquired field does not go out to the Kohanim at Yovel, because a person cannot consecrate something that is not his. Kohanim and Leviim may always consecrate and may always redeem, both before Yovel and after Yovel.