7.4 The eight lower divisions Krishna speaks

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, space, mind, understanding and the sense of self — these are the eight divisions of my lower nature.