Your grief over my destruction is useless. You should live your life happily, as there is already plenty of sorrow in this world.

This profound couplet speaks to the bittersweet nature of separation and sacrifice. The poet suggests that the pain of his departure or 'destruction' is only felt by the beloved. Therefore, he urges the beloved to live life joyfully, because the sorrow surrounding him is immense. It’s a poignant plea for the beloved's happiness, even if it means the poet's own suffering.