Shiva Purana

siva.sh/siva-purana/saturda-samhita/15/8

प्रतिज्ञां शृणुतान्तातौ यदि वान्तनयो ह्यहम् ।। करिष्येहं तथा येन मृत्युस्त्रस्तो भविष्यति ।। ८ ।।

sanskrit

O my parents, please listen to my vow. If I am your true son, I will do that whereby death itself will be terrified.

english translation

pratijJAM zRNutAntAtau yadi vAntanayo hyaham || kariSyehaM tathA yena mRtyustrasto bhaviSyati || 8 ||

hk transliteration by Sanscript