The answer is: A parcel of land

Ruth 4:3

In the book of Ruth, the concept of land ownership holds immense significance, highlighting not just economic transactions but the deeper roots of family lines and inheritance. When Boaz mentions to Naomi that she is selling a parcel of land, he wasn't just talking about a physical plot; he was navigating through the norms of ancient practice regarding family legacies. Property in Israel was seen as a divine allotment, and the loss of it was a weighty matter connected to identity, heritage, and duty.

To understand this better, consider the idea of the Year of Jubilee described in Leviticus 25, when land is to return to its original family owners. This means that while Naomi was dealing with Ruth’s plight at a time of famine, the land also represented a cry for restoration and hope.

Additionally, Boaz’s role in this narrative isn't just that of a redeemer for Ruth but also for Naomi’s familial line, which underlines crucial themes of compassion and responsibility. Few people realize that the name "Boaz" interestingly means "Strength," reflecting his character as a steadfast protector and loyal man—qualities held dear in this tapestry of faith and redemption.

This interaction unfolds in a context where community and relationships vividly align with the greater fabric of God's design, challenging believers to act with kindness and diligence in advocating for one another's well-being, just as Boaz did for Ruth and Naomi.