Leviticus 25:15
טו) בְּמִסְפַּר שָׁנִים אַחַר הַיּוֹבֵל תִּקְנֶה מֵאֵת עֲמִיתֶךָ בְּמִסְפַּר שְׁנֵי תְבוּאֹת יִמְכָּר־לָךְ:
According to the number of years after the Jubilee, you shall purchase from your fellow Jew; according to the number of years of crops, he shall sell to you. [Translation by Judaica Press]

Suggested Discussion Questions:

How does it change things to think of land in terms of crop years?

Time Period: Biblical (early ancestors to 165 BCE)