Shiva Purana
कालावच्छेदयुक्तानां गुरूणामप्यसौ गुरुः ॥ सर्वेषामेव सर्वेशः कालावच्छेदवर्जितः ॥ १९ ॥
He is not conditioned by time. He is the lord of all. He is the preceptor of all the preceptors, subject to the influence of Time.
english translation
kAlAvacchedayuktAnAM gurUNAmapyasau guruH ॥ sarveSAmeva sarvezaH kAlAvacchedavarjitaH ॥ 19 ॥
hk transliteration by Sanscript