Yoga Sūtra Chapter Three verse 28

ध्रुवे तद्गतिज्ञानम् ॥२८॥

dhruve tat-gati-jñānam ||28||

On pole star, knowledge of motion of that.

dhruva - pole startat - that, thisgati - going, moving, gait, deportment, motion in generaljñāna - knowing; knowledge; higher knowledge