Surya Siddhanta
प्रकृत्यन्तर्गतो देवो बहिर् अन्तश् च सर्वगः। सङ्कर्षणो +अपः सृष्ट्वादौ तासु वीर्यम् अवासृजत्॥
He is present in everything in nature (prakriti), without and within. At the beginning of creation, He had injected his own essence in the primordial water.
english translation