Tsong Kha Pa on Charity.

Chapter of the Truth Speaker (Satyakaparivarta):

By charity out of a sense of service, you will receive service from others such as your relatives; by using your own hands when giving you will obtain people who serve you; by giving when appropriate you will accomplish your aims on time.

And also:

By charity without hurting anyone else you will obtain stable resources; by giving while bearing unpleasantness you will have intimate companions.

Compendium

of the Perfections states:

If you cannot give because your ability is so small

Though people come and ask you for something,

So as to not make them feel low,

Comfort them with gentle speech.

Henceforth when people come to ask for something,

Do your best not to make them feel low and despairing,

And clear away the fault of stinginess.

Earnestly strive to eliminate craving.

Compendium of the Perfections states:

The spirit of enlightenment is the root of such generosity,

So do not give up this motive to make such gifts.

The Conqueror said, “In the world the supreme form of giving

Is the wish to give accompanied by the spirit of enlightenment.”

Source : https://archive.org/details/tsong-kha-pa-lam-rim-chen-mo.-the-great-treatise-on-the-stages-of-the-path-to-en_202304