मात्रास्पर्शास्तु कौन्तेय शीतोष्णसुखदु: खदा: |
आगमापायिनोऽनित्यास्तांस्तितिक्षस्व भारत || 14||
O son of Kunti, the interaction between the senses and the sense objects give rise to fleeting perceptions of happiness and distress. They are transient, they come and go like the winter and summer seasons. O descendant of Bharat, one must learn to tolerate them.
We experience this mortal world with the five senses that Bhagwan gave us in this mortal body. These five senses are the senses of sight, smell, taste, touch, and hearing. We experience joy, sorrow, and other such temporary feelings with the help of these senses.
Our perception of the inputs received through these senses gives us joy and sorrow. But the main thing that Bhagwan Shri Krishna highlights in this shloka is that the pleasure and distress that we feel with the help of these senses are temporary. They are not permanent and thus one must learn to bear it.