Bhagavagd Gita - Session 13- Track 1309

prakṛteḥ kriyamāṇāni guṇaiḥ karmāṇi sarvaśaḥ |
aḥaṁkāra-vimūḍhātmā kartāham iti manyate
||27|| (III)

"You must know that all actions are done by Prakriti”, not by yourself, there is no such thing as ‘me’ acting; aḥaṁkāra-vimūḍhātmā kartāham iti manyate, those who are mūḍhā, “Those who are ignorant, they believe: ‘I am the doer of actions’.” But one who is vidvān, one who is learned, who is wise, he knows that all actions are done by Prakriti. And then later on we shall be told that all actions are done by Para Prakriti, and that Para Prakriti itself issues from the Supreme Lord. Therefore all actions actually proceed from Him: “With this knowledge you must act.”

tattva-vit tu mahā-bāho guṇa-karma-vibhāgayoḥ |
guṇā guṇeṣu vartanta iti matvā na sajjate
||28|| (III)

prakṛter guṇa-sammūḍhāḥ sajjante guṇa-karmasu |
tān akṛtsna-vido mandān kṛtsna-vin na vicālayet
||29|| (III)

“The one who knows that this whole world is ruled by Prakriti, in which there is nothing but guṇā(s), Sattwa, Rajas and Tamas, and all actions emerge from these Gunas, guṇā guṇeṣu vartanta: all this world is nothing but these Gunas acting among themselves, knowing all this, one is not attached”. Because one becomes free from that egoistic sense:

prakṛter guṇa-saṁmūḍhāḥ sajjante guṇa-karmasu |
tān akṛtsna-vido mandān kṛtsna-vin na vicālayet

kṛtsna-vin: one who has known fully, he should act in such a way than those who are mūḍhā, those who are unlearned, those who are unwise, ignorant, allow them to act, and you should not create confusion in their mind.

Now is the last advice:

mayi sarvāṇi karmāṇi sannyasyādhyātma-cetasā |
nirāśīr nirmamo bhūtvā yudhyasva vigata-jvaraḥ
||30|| (III)

“Therefore on the basis of all that I have said, you put every action unto me, you sacrifice everything unto me; be liberated sannyasyā, karmāṇi sarvāṇi mayi; sannyasyā means ‘leaving’: throw all your actions in yajñā into me; ādhyātma-cetasā, with this knowledge of the Self, become nirāśīr, give up all the ideas of the fruits of action; nirāśīr, that’s not mean become pessimist, but give up all kinds of expectations, all kinds of desires for fruits of actions; nirmamaḥ, become non egoistic; yudhyasva vigatajvaraḥ, you fight and when you fight in this spirit there will be vigatajvaraḥ, you will be free from all fever, all grief, all anxiety.