Bhagavad Gita Chapter 7.4
bhūmir āpo ’nalo vāyuḥ
khaḿ mano buddhir eva ca
ahańkāra itīyaḿ me
bhinnā prakṛtir aṣṭadhā
Translation
Earth, water, fire, air, ether, mind, intelligence and false ego—all together these eight constitute My separated material energies.