Yoga Sūtra Chapter Three verse 26
भुवज्ञानं सूर्ये संयमात् ॥२६॥
bhuvana-jñānaṃ sūrye saṃyamāt ||26||
Complete restraint on the sun, knowledge of the world.
bhuvana - worldjñāna - knowing; knowledge; higher knowledgesūrya - sunsaṃyama - complete restraint