let us say an attorney who is also a close friend of mine assist me just thanks to our friendship, without charging any fee. Question is, is there a way to refer to such kind of situation? Would you use something like assisted on a friendly basis, or in friendship?
I've heard the Latin expression pro bono being used when a lawyer agrees to work at a reduced fee, or even without charging any fee.
As far as I know, it is used both when the client is a friend or relative and when the client cannot afford to pay the fee.