As long as I know the money is for betting i wont give it
You will not know because they will not tell you; they will always come up with excuses that will convince you to give them that money, or they can even boldly tell you that they want to gamble with it, not that they don’t have the money but that they don’t have access to it for the main reason that you should lend them the money later in the day and they will send it back to you. Things like that do occur.
When a gambler tells you he's borrowing money to gamble, he's implicitly warning you that if he loses, repaying the loan might be difficult, and you could end up sharing the loss. As someone with my mindset, I should be cautious and well-informed in such situations.