He also knows that this letter was written with tears of blood, and we have written our name on the paper of tales.

This powerful couplet speaks to the ultimate depth of emotional sacrifice. The poet suggests that the beloved should understand that the letter wasn't merely written with tears, but with tears of blood—implying a sacrifice of life itself. 'Sar-nama' means sacrificing one's head or life. Mir Taqi Mir elevates the act of writing love's secrets onto the very page, making it a life-defining revelation.