Bhagavad Gita · Chapter 13: The Field and the Knower of the Field

Bhagavad Gita 13.5

mahābhūtānyahaṅkāro buddhiravyaktameva ca | indriyāṇi daśaikaṃ ca pañca cendriyagocarāḥ ||

The great elements, the ego, the understanding, and the unmanifest; the ten senses and the mind, and the five objects of the senses;

Modern context

Here begins the list of what makes up the field: the elements, the ego, the intellect, the unmanifest root of nature, the ten senses, the mind, and the five sense objects. This is the old Sankhya inventory of what a person is made of. The surprising thing is that ego and intellect are listed as part of the field, along with earth and water. Even our sense of 'I' is something that can be observed.