Shiva Purana
युगावर्तेषु शिष्येत योगाचार्यस्वरूपिणा ॥ तत्रतत्रावतीर्णेन शिवेनैव प्रवर्त्यते ॥ १४ ॥
In every circle of Yugas, Śiva incarnates as Yogācārya in different places and propagates yoga.
english translation
yugAvarteSu ziSyeta yogAcAryasvarUpiNA ॥ tatratatrAvatIrNena zivenaiva pravartyate ॥ 14 ॥
hk transliteration by Sanscript