Bhagavad Gita 18.57
चेतसा सर्वकर्माणि मयि संन्यस्य मत्परः। बुद्धियोगमुपाश्रित्य मच्चित्तः सततं भव।।18.57।।
cetasā sarvakarmāṇi mayi saṃnyasya matparaḥ| buddhiyogamupāśritya maccittaḥ satataṃ bhava||18.57||
cetasa sarvakarmani mayi samnyasya matparah buddhiyogamupashritya maccittah satatam bhava18.57
Meaning
Mentally surrendering all actions to Krishna, devoted to Him, with the yoga of the intellect, keeping consciousness always fixed on Him — this is the path.
मन से समस्त कर्मों का संन्यास मुझमें करके मत्परायण होकर बुद्धियोग का आश्रय लेकर तुम सतत मच्चित्त बनो।
This is verse 57 of 78 in Chapter 18 (Moksha Sannyasa Yoga) of the Bhagavad Gita.