Shiva Purana

siva.sh/siva-purana/rudra-samhita/182/58

नाहं क्वचित्स्वं पितरं स्मरामि गुहांतरे घोरमनन्यचीर्णम् ।। एतद्व्रतं पशुपातं चरामि न मातरं त्वज्ञतमो विरूपः ।। ५८ ।।

sanskrit

I do not remember any father of mine. Ignorant and hideous that I am, I do not know my mother. In a cavern I am performing this severe Pāśupata rite, the like of which none has yet performed.

english translation

nAhaM kvacitsvaM pitaraM smarAmi guhAMtare ghoramananyacIrNam || etadvrataM pazupAtaM carAmi na mAtaraM tvajJatamo virUpaH || 58 ||

hk transliteration by Sanscript