Bhagavad Gita

ಪ್ರಕೃತೇಃ ಕ್ರಿಯಮಾಣಾನಿ ಗುಣೈಃ ಕರ್ಮಾಣಿ ಸರ್ವಶಃ ।
ಅಹಂಕಾರವಿಮೂಢಾತ್ಮಾ ಕರ್ತಾಹಮಿತಿ ಮನ್ಯತೇ॥೨೭॥
prakṛteḥ kriyamāṇāni guṇaiḥ karmāṇi sarvaśaḥ |
ahaṃkāravimūḍhātmā kartāhamiti manyate||27||

Gist of the sloka:
Prakruthi provides the body and the sense organs. One does all actions through them. They instead forget that, in their ego and believes they did it themselves.
The sloka opens up different doors of knowledge. Lord Krishna is indicating that one should not have ego to say, “I did it”. This is conceit and wrong. Believing so would lead to his downfall.
For, all actions in the universe is actually done by the Lord and He is the real doer in all. No one has independent action except the Lord. Everyone’s action though happening through them, is originating in Lord. Believing so in the Lord would elevate a person.
This gross body [pindanda], is created by prakruthi. To enable the body, there are sense organs for sensing and organs for actions provided. The primary senses [prakruthi provided] are: Sound [sky/space], Sparsha (touch) [air], rasa (taste) [water], roopa (vision) [agni/fire] and gandha (smell) [earth]. They are primarily sensed through Ear, Skin, Tongue, Eye and Nose.
Therefore, to believe that these have been achieved by oneself through self-effort is meaningless. For example, we believe we see/enjoy through our eyes. We need to remember the eye was but an instrument which saw an object which was placed in front of it by the Lord. We did not create the object, Lord did. We saw and enjoyed what was kept in front of us by the Lord. If we created the eye, can we then create the same to someone who is blind?
Similar is the case, if one has a lovely voice. We did not create the voice box which creates the sound, rather someone designed and gave it to us; for us to use it. That design was by the Lord and given to us by Lord. We now realize that the behind every action there is universal force at work.
Prakruthi is non-living [jadha] and has no desire of its own. Whereas those with soul [chetana], are living things having their own desires. A soul has its own swabhava [characteristics] which are unique to each living being. Our every action is in alignment with our swabhava and desire. We have desire but no independence of action.
The seeds by themselves cannot grow. The farmer plants, waters it and then the seeds grow according to their swabhava. Similar is our case with the farmer being the Lord.
The only entity which has both independence of action and desire is Lord Krishna himself. He desires and action happens. Our actions therefore are controlled by the Lord and not by us. We are one of the spokes in the universal cycle controlled and desired by the Lord.
To therefore, to have the ego to say “I did it” is meaningless. We neither have control over our birth nor death – or any action in-between. We need to remember this along with the fact that prakruthi has no desire or action by itself, whereas we can desire but have no independent action.