Bhagavad Gita · 10.41

यद्यद्विभूतिमत्सत्त्वं श्रीमदूर्जितमेव वा।तत्तदेवावगच्छ त्वं मम तेजोंऽशसम्भवम्॥

yad yad vibhūtimat sattvaṁ śhrīmad ūrjitam eva vā tat tad evāvagachchha tvaṁ mama tejo 'ṁśha-sambhavam

Whatever being is endowed with glory, beauty, or power — know that to be a manifestation born of a mere spark of my splendor.

— Bhagavad Gita 10.41

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)