Shiva Purana
एवं गुरुक्रमाल्लब्धं नंदीशाच्च मया पुनः । ततः परं स्वसंवेद्यं शिवे नैवानुभावितम् ११९ ।
This knowledge has come down from the preceptors. I got it from Nandīśa. Beyond this, it must be inferred from it and it is actually experienced only by Śiva.
english translation
evaM gurukramAllabdhaM naMdIzAcca mayA punaH । tataH paraM svasaMvedyaM zive naivAnubhAvitam 119 ।
hk transliteration by Sanscript