भूमिरापोऽनलो वायुः खं मनो बुद्धिरेव च। अहङ्कार इतीयं मे भिन्ना प्रकृतिरष्टधा ॥

bhūmir-āpo ’nalo vāyuḥ khaṁ mano buddhir eva cha ahankāra itīyaṁ me bhinnā prakṛitir aṣhṭadhā

Earth, water, fire, air, ether, Mind, and Reason also and Egoism—these are the eightfold division of My nature.

In plain words: Krishna lists eight parts of his nature: earth, water, fire, air, ether (space), mind, reason, and ego (the sense of "I").