In plain words
For those whose minds spread out and seize on outer objects, the cause of heavy bondage keeps growing. Those who turn back the mind that roams outside and become established suffer no distress in this world. Consider this.
Word for word
For those whose minds expand in grasping external objects, the cause of much bondage continually arises. Turning the outward-wandering mind back and becoming established [in the Self], they are free of affliction in the world. Consider this.