When you arrive, my heart's eyes overflow with joy. But when you leave, O beloved, what can I possibly do to stop you?

This beautiful couplet captures the intense emotions of love and longing. When the beloved arrives, the lover's heart is overwhelmed with joy, so much so that their 'heart's eyes' – a poetic expression for deep inner emotion – fill up, perhaps with tears of happiness. But the moment the beloved prepares to leave, a wave of sadness washes over the lover. They feel utterly helpless, wondering what they could possibly do to stop their dear one from departing. It's a poignant expression of how deeply intertwined the lover's happiness is with the presence of their beloved, and the pain of their absence.