It suggests that the hands or waist cannot perform any action simply because someone harbors thoughts in their heart.

This profound couplet speaks to the difference between physical strength and emotional restraint. Mir Taqi Mir suggests that mere physical ability—what our hands can do—is secondary. The real power, the true constraint, lies in the core of our being, our emotions, or our thoughts. If a person simply holds a thought in their heart, that thought itself can be enough to restrict or change everything, highlighting the overwhelming power of the mind over the body.