Bhagavad Gita · 10.8

अहं सर्वस्य प्रभवो मत्तः सर्वं प्रवर्तते।इति मत्वा भजन्ते मां बुधा भावसमन्विताः॥

ahaṁ sarvasya prabhavo mattaḥ sarvaṁ pravartate iti matvā bhajante māṁ budhā bhāva-samanvitāḥ

I am the origin of all creation. Everything proceeds from me. Knowing this, the wise worship me with hearts full of devotion.

— Bhagavad Gita 10.8

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