August 21

“And I will give power unto my two witnesses, and they shall prophesy a thousand two hundred and three-score days, clothed in sackcloth.” [Rev. 11:3] By these two witnesses are intended Muhammad the Messenger of God and ‘Alí the son of Abú Tálib. In the Qur’án it is said that God addressed Muhammad, saying, “We made Thee a witness, a herald, and a warner”;[Qur’án 48:8] that is, We have established Thee as one Who bears witness, Who imparts the glad-tidings of that which is to come, and Who warns of the wrath of God. A “witness” means one by whose affirmation matters are ascertained. The commandments of these two witnesses were to be followed for 1,260 days, each day corresponding to a year. Now, Muhammad was the root and ‘Alí the branch, like Moses and Joshua. It is said they were “clothed in sackcloth”, meaning that they appeared to wear not a new raiment but an old one. In other words, they would initially appear to be of no consequence in the eyes of other peoples and their Cause would not seem new. For the spiritual principles of the religion of Muhammad correspond to those of Christ in the Gospel, and His material commandments correspond for the most part to those of the Torah. This is the symbolism of the old raiment.  
- ‘Abdu’l-Baha  (Explaining the Eleventh Chapter of the Revelation of John; Table talks in Akka, authenticated by ‘Abdu’l-Baha; ‘Some Answered Questions’ – 2014 revised translation by the Baha’i World Centre)