Finished reading the book of Ruth. I don’t understand these few verses.

Ruth 4:3-5
Naomi, who has come back from the country of Moab, sold the piece of land which belonged to our brother Elimelech…On the day you buy the field from the hand of Naomi, you must also buy it from Ruth the Moabitess, the wifre of the dead, to perpetuate the name of the dead through his inheritance.”

I don’t think that “land” is used literally. Rather, I think it refers to the rights or the ability to extend the family line. When Naomi’s sons died, their wives were not carrying any fetus in their bodies. Henceforth, Elimelech’s family line would
have been terminated. However, Ruth came from a foreign land to serve the Lord, and was rewarded when she was married to Boaz. Thus, Elimelech’s family is still remembered till this day.

Not too sure if my interpretation is correct.