Erchin 9:1-2

Erchin 9:1

If a person sells his field at a time when the Jubilee year is observed, he may not redeem it after fewer than two years as per Leviticus 25:15, “He shall sell it to you based upon the number of years of fruit” (i.e., a sale is for “years” – minimum two). If one of those years was a year of blight or rot, or if it was a sabbatical year (so the buyer couldn’t enjoy the produce), it is not counted; if the buyer didn’t plant or plow, the year still counts. Rabbi Elazar says that if the field was sold before Rosh Hashana and it was full of produce then the buyer enjoys three crops over two years.

Erchin 9:2

If the owner of a field sold it to person A for 100 and person A sold it to person B for 200, the owner only needs to deal with person A when he redeems it as per Leviticus 25:27, “to the one to whom he sold it.” If the owner sold it to person A for 200 and person A sold it to person B for 100, then the owner must deal with the second person since “the one” means the one currently in possession. One may not sell a distant field in order to redeem a nearby field, nor one of poor quality in order to redeem one of good quality; one may not borrow in order to redeem a field, nor may one redeem a field piecemeal, though these things are permitted in order to redeem consecrated property. This is a way in which secular property is more stringent than consecrated property.