Bhagavad Gita 8.4
Matter consists of forms that perish; Divinity is the Supreme Self; and He who inspires the spirit of sacrifice in man, O noblest of their race, is I Myself, Who now stand in human form before thee.
अधिभूतं क्षरो भावः पुरुषश्चाधिदैवतम्।
अधियज्ञोऽहमेवात्र देहे देहभृतां वर॥adhibhūtaṃ kṣaro bhāvaḥ puruṣaścādhidaivatam|
adhiyajño'hamevātra dehe dehabhṛtāṃ vara||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).