Shiva Purana
अन्यथा तत्पतित्वं तु न भवेदिति यत्नतः ॥ य एषोन्तरिति शंभुश्छान्दोग्ये श्रूयते शिवः ॥ १६ ॥
Otherwise he would not become her husband He who is this intermediate is Śambhu and is heard in the Chāndogya as Śiva.
english translation
anyathA tatpatitvaM tu na bhavediti yatnataH ॥ ya eSontariti zaMbhuzchAndogye zrUyate zivaH ॥ 16 ॥
hk transliteration by Sanscript