Caliph Muawiyah is a 'Beast'
"You have asked about the meaning of the "four beasts" referred to in Revelations, Ch. 4. ‘Abdu'l-Bahá in a Tablet has given an explanation for the reference to the "beast" mentioned in Revelations 13:18, saying that the numerical value given to the beast in that passage referred to the date of the year, i.e. 666 A.D., when the Umayyad ruler arose. This is obviously a reference to Mu'áwíyih, the Umayyad Caliph who opposed the Imamate. He speaks further on this subject in "Some Answered Questions", Chapter XI." (1 August 1978)