ॐ कुर्वन्नेवेह कर्माणि

2^nd, Mantra of Ishavasyopanishada.

ॐ कुर्वन्नेवेह कर्माणि जिजीविषेच्छतँ समाः।
एवं त्वयि नान्यथेतोऽस्ति न कर्म लिप्यते नरे॥२॥
 
One should desire to live in this world a hundred years, one should live performing Karma (righteous deeds), by which method bad karma may not cling, i.e. one may not get attached to karma. Therefore, one should desire to live by doing only such karmas as Agnihotra etc.

(इस लोक मे कर्म करते हुए ही सौ वर्ष जीनेकी इच्छा करनी चाहिए। इसके सिवा और कोई मार्ग नहीं है, ऐसा करने से तुझे [अशुभ] कर्मका लेप नहीं होगा ॥2॥)