Bhagavad Gita 13.5
महाभूतान्यहंकारो बुद्धिरव्यक्तमेव च। इन्द्रियाणि दशैकं च पञ्च चेन्द्रियगोचराः॥
mahā-bhūtāny ahaṅkāro buddhir avyaktam eva ca indriyāṇi daśaikaṁ ca pañca cendriya-gocarāḥ
Translation
The great elements, ego-sense, intellect, the unmanifest also; ten senses and one more, and the five objects of sense.
Reflection
When something feels like your core, ask which line on the inventory it belongs to.
Read this verse in its chapter: Chapter Thirteen
The inventory begins. Five great elements (earth, water, fire, air, space). Ego-sense, the I-maker. Intellect, the discriminating function. The unmanifest, the source-state of prakriti before differentiation. Then ten indriyas (five organs of knowledge plus five of action) and the eleventh, mind. Then five sense-objects (sound, touch, form, taste, smell). Twenty-four parts in total. A whole human kshetra mapped at once. The list refuses mysticism here. What you call yourself, the verse says, decomposes into these. None of them is the knower. The list is also a tool. When something feels like the core of you, ask which line on the list it actually belongs to.