Is it forbidden to tell someone the ATM card's PIN, based on the contract concluded with the bank that includes a non-disclosure clause, even if one's father asks for it?

The account holder bears full responsibility if they inform someone of their secret number and this results in an assault on their account. The bank does not bear this responsibility, and this serves as a warning and a call for caution. It is not forbidden for the account holder to inform someone they trust with their account of their secret number so that they can make withdrawals on their behalf, such as a wife or a brother. There is no breach of the condition in this, for the implication of the condition is that the account holder bears the responsibility for divulging the secret number.