Indriya

Senses or faculties of perception and action. They are divided into five jñānendriya (perception: sight, hearing, smell, taste, touch) and five karmendriya (action: speech, grasping, locomotion, excretion, reproduction). Their control constitutes pratyāhāra, the fifth aṅga of Patañjali’s yoga. Without mastery of the indriyas, meditation lacks a firm foundation.