Shiva Purana
अवाप्य मानुष्यमयं कदाचिद्विहृत्य शंभोः परमात्मरूपे ॥ फलानि सर्वाणि तु कर्मजानि यास्याम्यहं तत्तनुतां हि तस्य॥ २०॥
After getting human birth once in a way, and sporting about in the great soul form of Śiva I shall attain the fruits of all sacred rites in that form.
english translation
avApya mAnuSyamayaM kadAcidvihRtya zaMbhoH paramAtmarUpe ॥ phalAni sarvANi tu karmajAni yAsyAmyahaM tattanutAM hi tasya॥ 20॥
hk transliteration by Sanscript