2.14 As sound, touch, form, taste and smell with their bases, are the effects of subtle elements (Tanmatras), they are called Matras. The contact with these through the ear and other senses gives rise to feelings of pleasure and pain, in the form of heat and cold, softness and hardness. The words 'cold and heat' illustrate other sensations too. Endure these with courage till you have discharged your duties as prescribed by the scriptures. The brave must endure them patiently, as they 'come and go'. They are transient. When the Karmas, which cause bondage, are destroyed, this 'coming and going' will end.

The Lord now explains the purpose of this endurance: