This is the unfolding of Revelation 12 verses 3 to 6;
"...Verses 3 and 4. “And there appeared a great wonder in heaven; and behold a great red dragon, having seven heads and ten horns, and seven crowns upon his heads. And his tail drew the third part of the stars of heaven, and did cast them to the earth.” These signs are an allusion to the dynasty of the Umayyads who dominated the Muḥammadan religion. Seven heads and seven crowns mean seven countries and dominions over which the Umayyads had power: they were the Roman dominion around Damascus; and the Persian, Arabian and Egyptian dominions, together with the dominion of Africa—that is to say, Tunis, Morocco and Algeria; the dominion of Andalusia, which is now Spain; and the dominion of the Turks of Transoxania. The Umayyads had power over these countries. The ten horns mean the names of the Umayyad rulers—that is, without repetition, there were ten names of rulers, meaning ten names of commanders and chiefs—the first is Abú Súfyán and the last Marván—but several of them bear the same name. So there are two Muáviyá, three Yazíd, two Valíd, and two Marván; but if the names were counted without repetition there would be ten. The Umayyads, of whom the first was Abú Súfyán, Amír of Mecca and chief of the dynasty of the Umayyads, and the last was Marván, destroyed the third part of the holy and saintly people of the lineage of Muḥammad who were like the stars of heaven.
Verse 4. “And the dragon stood before the woman which was ready to be delivered, for to devour the child as soon as it was born.” As we have before explained, this woman is the Law of God. The dragon was standing near the woman to devour her child, and this child was the promised Manifestation, the offspring of the Law of Muḥammad. The Umayyads were always waiting to get possession of the Promised One, Who was to come from the line of Muḥammad, to destroy and annihilate Him; for they much feared the appearance of the promised Manifestation, and they sought to kill any of Muḥammad’s descendants who might be highly esteemed.
Verse 5. “And she brought forth a man child, Who was to rule all nations with a rod of iron.” This great son is the promised Manifestation Who was born of the Law of God and reared in the bosom of the divine teachings. The iron rod is a symbol of power and might—it is not a sword—and means that with divine power and might He will shepherd all the nations of the earth. This son is the Báb.
Verse 5. “And her child was caught up unto God, and to His throne.” This is a prophecy of the Báb, Who ascended to the heavenly realm, to the Throne of God, and to the center of His Kingdom. Consider how all this corresponds to what happened.
Verse 6. “And the woman fled into the wilderness”—that is to say, the Law of God fled to the wilderness, meaning the vast desert of Ḥijáz, and the Arabian Peninsula....."
1260 is reference to AH1260 years and this was AD1844 when the Bab gave His Message. Thus the Faith of Muhammad lasted 1260 years, as foretold by Revelation and Daniel.
This is the full explanation of Chapter 12 -
Bahá'í Reference Library - Some Answered Questions, Pages 67-72
Regards Tony