Gambling with someone else's money is a very bad idea.
It is like calling your death before the death call. Wouldn't it be much better to utilize that loan into some kind of investment or starting a business? This way, he will not only become able to return the borrowed money but also recover his loss. Above that, he will start earning profits. Though it will take some years but it can be the beginning of a new life. All depends on just one right decision.