Learn English – Does “generosity”/”generous” – as character quality – imply connotations “giving of your OWN resources, not someone else’s”

The question is about the context attached (or rather not attached) to the term "generosity"/"generous" (defined in Merriam-Webster as "liberal in giving").

The question is, is there a widely/universally understood context of "giving of your own resources" (and NOT someone else's) when using the term?

Please note that I am asking for an answer that can be supported by an official/scholarly reference, not merely an opinion. E.g. a dictionary definition precise enough to include/exclude such contexts; or a scholarly article discussing the topic.

Due to the fact that there are a lot of different meanings to the word "generous", I will clarify specifically the ones I mean/don't mean:

• This Q IS about the use of the term "generous"/"generosity" pertaining to a personal quality of an individual's character; specifically used as an opposite of "being greedy"

• This Q is NOT about the archaic "nobility"/"class-status" meaning of the word.

• This Q is NOT about the use of "generous" as indication of size (as in "generous slice of the cake"/"generous amount of help").

• This Q is specifically about the use specifically of the word "generous", not some other positive quality. E.g. we are NOT discussing whether you are good/nice/well-meaning when wishing to give other people from resources that are not yours. Only whether or not you can be called a generous person based on such.

Here is a very specific example to illustrate the question precisely:

Situation 1: You go to a restaurant; you pay for dinner and add extra $50 tip to the waiter on top of the customary 15% tip, despite the fact that the service/dinner was quite ordinary, not deserving of extra tip on merits. In this case, you can obviously be said to be generous to the waiter; or committing an act of generosity (in your attitude, NOT the large amount).

Situation 2: You go to a restaurant for a dinner event paid for by the company you work for (therefore, ultimately, paid for by the company owners – who are NOT you and are not present). It is now the time to decide how much of a tip to give to the waiter.

QUESTION: Would advocating for an extra $50 tip (on top of the customary 15%, despite the fact that the service/dinner was quite ordinary, not deserving of extra tip on merits) still be considered an act of generosity (as opposed to general good will), even though that extra $50 would be paid for by people other than you and will have no measurable financial impact to yourself?

1. I'm not asking for moral dimension of this – merely of whether in this specific second scenario the word generosity is a valid term to use to describe your personal attitude about extra $50.

2. I am not asking about whether the extra $50 tip can be called generous – I am asking about whether your behavior in giving such a tip can be called generosity.