Just as we once used to rub those feet with our eyes, we now rub our hands with regret.

This powerful couplet explores the nature of lingering sorrow. The poet describes a deep, almost obsessive connection, comparing the way he used to gaze at the beloved's feet (with his eyes) to how he now rubs his hands with profound regret. It suggests that the sorrow is so deeply ingrained, it has become a physical habit, a constant reminder of what was lost.