Shiva Purana
न निवर्तयितुं शक्यं सान्निध्यं सदकारणम् ॥ अधिष्ठाता ततो नित्यमज्ञातो जगतश्शिवः ॥ ९० ॥
It is not possible to avoid the proximity of Sat without its cause. Moreover the presiding deity Śiva is even unknown to the universe.
english translation
na nivartayituM zakyaM sAnnidhyaM sadakAraNam ॥ adhiSThAtA tato nityamajJAto jagatazzivaH ॥ 90 ॥
hk transliteration by Sanscript