Shiva Purana

siva.sh/siva-purana/rudra-samhita/88/64

शिवो ब्रह्माविकारः स भक्तहेतोर्धृताकृतिः ।। प्रभुतां लौकिकीं नैव संदर्शयितुमिच्छति।।।६४।

sanskrit

Śiva is Brahman, unchanging and without aberration. He assumes shapes and forms for the welfare of his devotees. He does not make a show of worldly lordship.

english translation

zivo brahmAvikAraH sa bhaktahetordhRtAkRtiH || prabhutAM laukikIM naiva saMdarzayitumicchati|||64|

hk transliteration by Sanscript