All perfect praise be to Allaah, The Lord of the worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad , is His slave and messenger.
If the owner of the money wants to transfer it, the transfer fee should be paid from his own money and not from Zakah money. This is clearly stated by a group of scholars including Imaam An-Nawawi in Al-Majmoo‘, as he said: "In cases where transferring the Zakah money is permissible or obligatory, then the owner should pay the fees from his own money."
Hence, you have to pay the fees of sending the Zakah money via Western Union from your money and not from the Zakah money.
Allaah Knows best.
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