Shiva Purana
ममावतारा हि शुभे योगाचार्यच्छलेन तु ॥ सर्वांतरेषु सन्त्यार्ये संततिश्च सहस्रशः ॥ २७ ॥
O noble lady, these are my incarnations as Yogācārya in all the Manvantaras and thousands of generations.
english translation
mamAvatArA hi zubhe yogAcAryacchalena tu ॥ sarvAMtareSu santyArye saMtatizca sahasrazaH ॥ 27 ॥
hk transliteration by Sanscript