Is it permissible to give a brother money from the prohibited investment certificates to buy clothes or as transportation expenses, and is it permissible to pay part of his phone bill with it?

It is permissible to give the poor brother money acquired through unlawful means, and it is permissible for the brother to use it for his needs. However, paying the questioner's phone bill from this money is not permissible, because it is not permissible to benefit from unlawfully acquired money.