Reference

Leviticus 25:14

And if thou sell ought unto thy neighbour, or buyest ought of thy neighbour’s hand, ye shall not oppress one another:
12

For it is the jubile; it shall be holy unto you: ye shall eat the increase thereof out of the field.

13

In the year of this jubile ye shall return every man unto his possession.

14

And if thou sell ought unto thy neighbour, or buyest ought of thy neighbour’s hand, ye shall not oppress one another:

15

According to the number of years after the jubile thou shalt buy of thy neighbour, and according unto the number of years of the fruits he shall sell unto thee:

16

According to the multitude of years thou shalt increase the price thereof, and according to the fewness of years thou shalt diminish the price of it: for according to the number of the years of the fruits doth he sell unto thee.

Counter-Arguments

The strongest case that this verse does not belong in this theme.

Land Sabbath / Rest for the Earth

This verse addresses fair dealing in transactions between individuals ("sell ought unto thy neighbour, or buyest ought of thy neighbour’s hand") and explicitly prohibits oppression in such dealings. It makes no mention of land, rest, seven-year cycles, jubilee, or fallow fields, which are all central to the "Land Sabbath / Rest for the Earth" theme.