As the reins govern the horse or the iron goad the elephant, so the science of royal duties forms the reins for restraining the world.
यथा हि रश्मयोऽश्वस्य द्विरदस्याङ्कद्धशो यथा। नरेन्द्रधर्मो लोकस्य तथा प्रग्रहणं स्मृतम्॥