Bhagavad Gita Chapter 3 Verse 30

Gita 3.30

मयि, सर्वाणि, कर्माणि, संन्यस्य, अध्यात्मचेतसा,
निराशीः, निर्ममः, भूत्वा, युध्यस्व, विगतज्वरः।।30।।

Gita 3.30

Myi, sarvaani, karmaani, sannyasya, adhyatmchetsa,
NiraashiH, nirmmH, bhootva, yudhyasv, vigatjvarH ||30||

Translation: (Adhyatmchetsa) with the mind fixed in the Purna Parmatma (sarvaani) all (karmaani) actions (myi) to me (sannyasya) offering (niraashiH) free from desire (nirmmH) free from possessiveness and (vigatjvarH) free from lamentation (bhootva) being (yudhyasv) fight. (30)

Bhagavad Gita Chapter 3 Verse 30

With the mind fixed in the Purna Parmatma, offering all actions to me, being free from desire, possessiveness and lamentation, fight. Its evidence is also given in Gita Gita Chapter 18 Verse 66 that leaving all my religious observances into me, go in the refuge of the Almighty God.