Bhagavad Gita 7.4
भूमिरापोऽनलो वायुः खं मनो बुद्धिरेव च। अहङ्कार इतीयं मे भिन्ना प्रकृतिरष्टधा।।7.4।।
bhūmirāpo'nalo vāyuḥ khaṃ mano buddhireva ca| ahaṅkāra itīyaṃ me bhinnā prakṛtiraṣṭadhā||7.4||
bhumirapo'nalo vayuh kham mano buddhireva ca ahankara itiyam me bhinna prakritirashtadha7.4
Meaning
Krishna describes His eightfold material nature: earth, water, fire, air, space, mind, intellect, and ego. These constitute the lower, material energy of the Lord.
पृथ्वी, जल, अग्नि, वायु और आकाश तथा मन, बुद्धि और अहंकार — यह आठ प्रकार से विभक्त हुई मेरी प्रकृति है।
This is verse 4 of 30 in Chapter 7 (Jnana Vijnana Yoga) of the Bhagavad Gita.