Commentators explain this verse provides a practical command for generosity. After the main harvest of olives, landowners were forbidden from going back to meticulously gather every last fruit. This wasn't about accidental leftovers; it was an intentional act of leaving a portion for the most vulnerable members of society—the sojourner, the fatherless, and the widow. As one scholar notes, the challenge isn't just agreeing with mercy, but actually practicing it in our daily lives.