Indriya

Indriya (sense faculty, organ of perception) is a fundamental concept in Indian philosophy referring to the senses.

Overview

Indriya (Sanskrit indriya, “faculty” or “organ”) refers to the sense faculties that enable perception and action. In the Samkhya and Yoga traditions, there are five jnanendriyas (organs of perception — eye, ear, nose, tongue, skin) and five karmendriyas (organs of action — hands, feet, speech, excretion, reproduction). Together with the mind (manas), they constitute the eleven indriyas of the individual.

Philosophical Context

The Samkhya Karika (by Ishvarakrishna, c. 4th century CE) classifies the indriyas as evolutes of ahankara (ego-sense), which itself arises from buddhi (intellect) and prakriti (nature). The Yoga Sutras (1.17-18) describe the practice of pratyahara (withdrawal of the senses) as the fifth limb of yoga — the systematic turning of the senses inward, away from external objects. The Bhagavad Gita (2.58) describes the sage who has withdrawn the senses “as a tortoise withdraws its limbs.”

Interpretations

In Samkhya, the indriyas are material instruments — they are evolutes of prakriti and are not conscious in themselves. In Yoga, the indriyas are controlled through pratyahara (withdrawal) to prepare for meditation. In Buddhism, the six ayatana (sense bases — the five physical senses plus mind) are analyzed in detail in the Abhidhamma as the foundation for understanding the arising and cessation of suffering. In modern psychology, the indriyas have been compared to the five classical senses plus the “proprioceptive” sense of body awareness.

Verification Notes

• Samkhya Karika 8-16 on the indriyas as evolutes of ahankara.
• Yoga Sutras 2.54-55 on pratyahara.
• Bhagavad Gita 2.58 on the withdrawal of the senses.
• Abhidhammattha Sangaha on the six sense bases.
• Audited against Wikipedia and Indian philosophy references (September 2026).