Juristic basis awards loan banks

One of the issues raised in banks loan account which aims to help the needy and the benefit does not apply to these accounts, but banks are the lucky draw prize to people who are opening this account.This has caused some people attempted to open an account to get the prize and represents one of the former lottery that people bought raffle tickets to win rather than help the needy. This has caused some bring banks an institution's raffle. The auther seeks to express the fact that despite the similarity of the prize to former raffle, it is permissible.