Shiva Purana

siva.sh/siva-purana/rudra-samhita/192/49

त्वमेव चाद्यः पुरुषोऽद्वितीयस्तुर्य आत्मदृक् ।। ईशो हेतुरहेतुश्च सविकारः प्रतीयसे ।। ४९ ।।

sanskrit

You are the primordial Puruṣa without a second. You are the fourth being,the vision of the soul. You appear as undergoing change though you are the lord, the cause without another cause unto you.

english translation

tvameva cAdyaH puruSo'dvitIyasturya AtmadRk || Izo heturahetuzca savikAraH pratIyase || 49 ||

hk transliteration by Sanscript