The memory of slavery in Egypt serves as a profound moral foundation for social responsibilities, particularly the duty to leave portions of the harvest for the most vulnerable members of society. Recalling the harsh reality of bondage is meant to be a deeply personal and emotional experience. The primary approach among commentators is that this memory is designed to awaken a deep sense of empathy for the desperate situation of those who have absolutely nothing. This awareness is also closely connected to the obligation to care for the stranger, who lives in a highly vulnerable state [אבן עזרא].
Having once been slaves themselves, the Israelites know what it means to rely on gathering leftovers and gleanings just to survive [ספורנו]. If their Egyptian taskmasters had permitted them to gather remnants in the vineyards, it would have provided them with immense comfort and relief. Recognizing this past hardship teaches them exactly how they must treat the oppressed today [העמק דבר]. Through this personal connection to their own history, a person can truly understand the immense joy that finding these leftover crops brings to the poor, allowing them to fulfill the Commandment with genuine insight [ביאור שטיינזלץ].
While compassion is a central theme, an alternative perspective views this memory not just as an emotional appeal, but as the foundation of a strict property obligation. Recalling the departure from slavery serves as a reminder that God alone redeemed the people. Because He freed them, both the individuals and all their possessions belong entirely to Him. As a result, a person is bound to use their property exactly as God wishes and commands [רלב״ג].
Ultimately, the instruction to carry out this practice refers to the physical act of leaving the produce behind. This requires the farmer to avoid searching the branches too meticulously and to refrain from clearing away every last piece of fruit, guaranteeing that a meaningful portion remains in the field for those who truly need it [נתינה לגר].