मात्रास्पर्शास्तु कौन्तेय शीतोष्णसुखदुःखदाः। आगमापायिनोऽनित्यास्तांस्तितिक्षस्व भारत॥
matra-sparshash tu kaunteya shitoshna-sukha-duhkha-dah agamapayino'nityas tams titikshasva bharata
Translation
O son of Kunti, the contact of the senses with their objects gives rise to cold and heat, pleasure and pain. They come and go, they are impermanent. Bear them patiently, O Bharata.
Commentary
Krishna teaches the principle of equanimity - pleasure and pain are temporary sensations that come and go. A wise person endures them without being disturbed, like the changing of seasons.
wisdompeacedetachment