I have no respite even for a moment from beating my chest in grief. It means that here, there is a great deal of mourning for the departure of my heart.

This couplet speaks of profound emotional exhaustion. The speaker says they don't have the leisure for even a single word from the beloved (or the heart-throb). Why? Because they are utterly consumed by the overwhelming mourning—the 'matam'—of the heart's departure. It’s a powerful declaration that the pain of separation is so immense that it renders the person speechless. It’s not a lack of love, but a surplus of grief.