How can the creditor's right be protected when lending money to his brother residing in another country, taking into account previous unsuccessful experiences with other brothers?

Writing down a debt is recommended according to the majority of scholars, based on the Almighty's saying: "O you who have believed, when you contract a debt for a specified term, write it down" [Al-Baqarah: 282].

To ensure the right is secured, the debt should be written down, specifying its amount and term, and witnessed by two men or one man and two women. It is permissible to request a pledge (collateral) so that if the debtor defaults on repayment, the pledge can be sold and the debt recovered from its proceeds. As for legal procedures, specialists should be consulted.