The great Elements, Individuality, Reason, and also the unmanifested, the ten senses and the one, and the five pastures of the senses;

The catalogue opens with a compressed Samkhya-style ontology: the five gross elements (mahabhuta — earth, water, fire, air, ether), ahankara (the ego-sense, the faculty of individuation that manufactures “I” and “mine”), buddhi (the discriminating intellect), the unmanifest (avyakta — the unexpressed root-potential prakriti sits in before it differentiates into named things), the eleven senses (five of perception, five of action, plus mind/manas), and the five sense-objects. None of this vocabulary gets its own concept note here, so it’s worth being precise about it once: these are the instruments and raw material of experience — everything that can be observed — which is exactly why all of it belongs to the “field” side of the kshetra/kshetrajna divide, not the knower.

Study — Kṣetra Kṣetrajña Vibhāga Yoga