Whatever the best does, that same the other people do. Whatever he establishes as standard, that the world follows.

Responsibility of the spiritual leader. The śreṣṭha — the best, the excellent — establishes pramāṇa — standard, norm — by his mere example.

This is spiritual sociology: the masses imitate leaders. Whoever possesses legitimate authority — not domination but excellence — has special obligation to act rightly. The world (loka) follows the superior (anuvartate) — not by obligation but by imitative nature.