From the chest, ribs, and the heart of blood, I was destined to mourn, but that (destiny/place) has been lost.

This powerful couplet explores the depth of emotional pain and sacrifice. Mir Taqi Mir is saying that losing the beloved's heart (dil-e-khoon) by merely leaving the 'breast-like companionship' (seena-kobi-e-sang) was nothing compared to the intense grief (sakhth maatam) that he had to endure on his own behalf. It speaks to a pain so profound that even the memory of the beloved's presence is a source of suffering.