Shiva Purana
मां न जानासि किं नाथं प्रपञ्चो यस्य मे कृतिः ॥ त्रिधात्मानं विभज्येदं सृष्ट्वाथ परिपाल्यते ॥ २४ ॥
Don’t you know Me, the Lord, whose work this world is? He divides this Self into three parts and then creates and maintains it.
english translation
mAM na jAnAsi kiM nAthaM prapaJco yasya me kRtiH ॥ tridhAtmAnaM vibhajyedaM sRSTvAtha paripAlyate ॥ 24 ॥
hk transliteration by Sanscript