Who will let him sit, after he rises from your threshold? This literally means asking who will allow him to sit down after he has risen from your doorstep.

This couplet captures the essence of inescapable devotion. The speaker is saying that once someone has become so deeply attached to the beloved's presence—rising from the very threshold (Aastaa'n)—no one, not even the beloved, will allow them to simply sit back down and leave. It speaks to a profound, permanent connection that defies boundaries and casual separation.