Chapter II Sloka 38

suoÊ>oe sme k«Tva la-ala-aE jyajyaE,
ttae yuÏay yuJySv nEv< papmvaPSyis.

sukhadu×khe same k®tv˜ 
l˜bh˜l˜bhau jay˜jayau |
tato yuddh˜ya yujyasva 
naivaÕ p˜pamav˜psyasi ( 2|38)||

Having made pleasure and pain, gain and loss, victory and defeat the same, engage thou in battle for the sake of battle; thus thou shalt not incur sin.