The problem here is that people forget to document what will happen if the money is lost in gambling and will the borrower share the loss too?
Trusting someone or financing someone to gamble on your behalf doesn't necessarily require documentation, especially in the gambling world where words are often honored. When you fund someone to gamble, it implies a level of trust, and any potential benefits are typically shared according to the agreement. In the event of a loss, the responsibility falls on the financier, while the person gambling bears no responsibility for the losses. That's how it typically works.