The bond between these wounds/scars and this heart is as deep as the connection between flesh and bone. How can I possibly separate these marks from my heart before death?

This couplet speaks of a bond that is utterly inseparable. The stain (daagh) here represents a memory, a scar, or the mark left by intense emotion. Amrut Ghayal beautifully compares this connection to 'bone and marrow' (haad-chaam), suggesting that the pain or memory is not just superficial; it is part of the very essence of the heart. He asks how one can separate something so fundamental, even when facing death.