स एव शिरःकर्णविशुद्धो नीचैर्गतः षोडशमार्गो वा ॥ कZ_०२.३०.३४ ॥
sa eva śiraḥkarṇaviśuddho nīcairgataḥ ṣoḍaśamārgo vā
That same (regulated movement), when executed with a clean/steady head-and-ear carriage, is called nīcairgata; it is (also described as) a ‘sixteen-pattern’ course.
It provides an observable proxy for training and obedience; administrators can evaluate readiness without relying on subjective claims by handlers.