Re: Hazrat Ameer Muawiya r.a and the Romans
Another reference from your most authentic book.
Sunni reference: Musnad Ahmed Bin Hanbal Volume 5 page 347
Imam of Ahl'ul Sunnah Ahmad Bin Hanbal records in his Musnad that:
"Muaweyah consumed a liquid that had been declared haraam by the Prophet (p)".
still can't find your guru's name.