According to the Gita, how do I abandon fruits of my karma? Should I donate my whole salary and stay hungry?

Thanks for your question and asking me to answer!

nātyaśhnatastu yogo ’sti na chaikāntam anaśhnataḥ।

Nirvritananda

Facial Stimulation Clears Brain Waste and Boosts Aging Minds - Neuroscience News

There must be a sense of balance in all your activities avoiding the two extremes of being a workaholic and being a lazy person. Similarly in your eating, sleeping, relaxing, you must be moderate.

युक्ताहारविहारस्य युक्तचेष्टस्य कर्मसु |

युक्तस्वप्नावबोधस्य योगो भवति दु:खहा || 6. 17||

This nonhormonal hot-flash remedy gives options to women, experts say - The Washington Post

A person who is moderate in food, recreation, work, sleep and waking, to such a person Yoga becomes a means to kill sorrow!

So that way, you cannot abandon the fruits of your action. Now you will be attached to the action of donating all your money and staying hungry!

You can as well stay hungry without earning! Why waste your time and energy in toiling from dawn to dusk just to earn money, donate all of them and stay hungry?

If you believe in God, do you think God can save you from cancer?

नात्यश्नतस्तु योगोऽस्ति न चैकान्तमनश्नत: |

न चाति स्वप्नशीलस्य जाग्रतो नैव चार्जुन || 6. 16||

na chāti-svapna-śhīlasya jāgrato naiva chārjuna।। 6.16।।

What was your best experience of having your navel touched?

Is there any need of sweating so much just to stay hungry? And after so much toiling from morning till evening or night, where's the energy left in you to stay hungry even? You will not only be able not to stay hungry, but you will overeat! To stay hungry, your body must in a fit condition.

Says Sri Krishna in the 6th Chapter of the Bhagavad Gita —

Thanks for reading

S&P 500 Gains and Losses Today: Lululemon Stock Falls as Forecasts Reflect Consumer Caution - Investopedia

When you receive your salary at the month end, use ⅒ of it for Dharmic activities and the with the remaining amount, use it to keep your body in a fit condition for your sadhana and, to support your parents and other family members like your wife and children (if any).

If you want to donate your whole salary and stay hungry, why work at all in the first place?

yukta-svapnāvabodhasya yogo bhavati duḥkha-hā।। 6.17

Atheists, there is a god up there in heaven and he loves you so much that he sent his son to die the worst death imaginable and then to turn into a zombie all to save you from sin. Why do you reject him?

O Arjuna! Yoga is not for him who eats too much or doesn't eat all; Yoga is not for him who sleeps too much or doesn't sleep at all

yuktāhāra-vihārasya yukta-cheṣhṭasya karmasu।

Abandoning the fruits of actions means you offer the results of your actions to God. This doesn't mean that you will not receive the fruits of your actions. You certainly will! But when you work, you must perform it as an offering unto God and leave the results in His hands. You don't think about the results of your actions while you are working, and even after you are done with your work!

This ‘smoke’ ring was formed by one of the biggest creatures on Earth. Scientists say it has never been documented before - BBC Wildlife Magazine