Srimad-Bhagavatam: Canto 11 - Chapter 1 - Verse 11
Sanskrit:
गुणिनामप्यहं सूत्रं महतां च महानहम् ।सूक्ष्माणामप्यहं जीवो दुर्जयानामहं मन: ॥ ११ ॥
ITRANS:
guṇinām apy ahaṁ sūtraṁmahatāṁ ca mahān ahamsūkṣmāṇām apy ahaṁ jīvodurjayānām ahaṁ manaḥ
Translation:
Among things possessing qualities I am the primary manifestation of nature, and among great things I am the total material creation. Among subtle things I am the spirit soul, and of things that are difficult to conquer I am the mind.