— having taken hold of that power; — the mantras; — endowed with all-knowing power; — they engage, set forth; — for the task (assigned to them); — this (i.e. they, the mantras); — like the (sense-)instruments; — of embodied beings
Taking hold of that power (Spanda), the mantras — invested with all-knowing energy — perform their function, just as the sense-organs do for embodied beings.