Is it permissible to pay the debts of a indebted brother from zakat funds, knowing that there are multiple creditors and various types of debts, and is it permissible to pay the mother’s debt from zakat funds so that she can pay her debt to another creditor, and is it a sin to delay paying zakat at the request of one of the creditors to delay the debt?

It is permissible for a mother and a son to give their brother Zakat (definition) to pay off his debt. However, it is not permissible to count the debt as Zakat without transferring ownership of the money to the debtor. If the repayment of the debt between them is intended for the purpose of recovering the money and self-benefit, then it is not valid. But if it is without intention or collusion, then it is valid with the debtor's permission. If the debtor delays paying his debt after receiving the Zakat, this is not considered a delay of the Zakat. However, retaining Zakat to pay off the debtor's debt later is not permissible due to delaying the disbursement of Zakat without a valid excuse.