। ॥ ७० ॥
In plain words
The mind ranges over everything — mountains, cities, walled fortresses, rivers no one can ford. And if it doesn't get the object it went out for, it comes back worn out, stiff and heavy, like something poison has gripped.
Close to the Sanskrit
The mind, wandering all around mountains, cities, fortresses and impassable rivers — if it does not obtain the object, it comes back wearied, as though held fast by poison.