Shiva Purana
अनंताच्छुद्धविद्यायाः परस्ताच्च महेश्वरात् ॥ सर्वविद्येश्वराधीशान्न पराच्च सदाशिवात् ॥ २५ ॥
From the infinite and beyond the pure knowledge, from the Supreme Lord. He is the Lord of all knowledge and no one else but Sadashiva.
english translation
anaMtAcchuddhavidyAyAH parastAcca mahezvarAt ॥ sarvavidyezvarAdhIzAnna parAcca sadAzivAt ॥ 25 ॥
hk transliteration by Sanscript