Salams to all.
I've been having a sneaking suspicion lately concerning the life and times of Muhammad, and when exactly was the Quran revealed....After becoming convinced that the geography of all the prophets - including Muhammad himself - was in South West Arabia, I have been toying with the idea lately that Muhammad was not born in 570 A.D (+/- a few years) but possibly a century earlier.
Incidently, concerning the so-called "Prophecy of the Smoke" mentioned in Surah 44 of the Quran, I believe this event could very-well be the "Mystery Smoke" of 536 A.D. This event was documented by people all over the eastern part of the globe, from Europe to China, as the sun was veiled by a haze of ash for 8 months straight, which had catasrophic effects on the harvest season, unlike anything ever witnessed on the planet for the past 2000 years. This event happened during Muhammad's lifetime.:
The proof is in the Quran:
{No; they are in doubt, playing * Therefore, watch for the day when the sky will bring a visible smoke * It will envelop the people ; a painful retribution * "Our Lord, remove the retribution from us; we are believers" * ....* We will remove the retribution in a while; you will then return (to your disbelief)}...[44:9-15]
Could this be any other event than the phenomenon of 536 A.D??
This proves that the event already happened, as the word "watch" which appears in the translation above, corresponds to the term ارتقب, which means "expect something to happen soon". It is telling Muhammad to look out for an event that will happen soon (back then).
The event of 536 A.D is a minor "smoke" that was caused by an ash cloud from a volcano that erupted somewhere on Earth, and envelopped large areas of the Eastern Hemisphere, from Europe to China. The inhabitants of all these countries recorded the event, and the people of Arabia certainly witnessed it. The Quran says: {We will remove the retribution in a while; you will then return (to your disbelief)}. This could only mean that the event already happened, and that it was a minor version of the great cataclysm that will take place at the end of times.
Now...since Allah was prophecying to Muhammad (P) an event that would take place in 536 A.D, during his lifetime, this means that Muhamamd was alive and well, and reciting the Quran BEFORE that date. So how can he be born in 570 A.D (as the traditions claim)??
Please google: "Mystery Cloud of 536 A.D" and read all you can about it.
Peace...
The "Mystery Cloud" in my view is unlikely to be the smoke prophecy. The reason being is because like you said the smoke spread to Europe and China.
44:10 Therefore, watch for the day when the sky will bring a visible smoke/gas.
44:11 It will envelop the people: "This is a painful retribution!"
44:12 "Our Lord, remove the retribution from us; we are those who acknowledge."
44:13 How is it that now they remember, while a clarifying messenger had come to them?
44:14 But they turned away from him and said, "Clearly educated, but crazy!"
44:15 We will remove the retribution in a while; you will then revert back.
44:16 On the day We strike the great strike, We will avenge.
What messenger was sent to China???
Why would God afflict a people in which no messenger was sent?
44:15 We will remove the retribution in a while; you will then revert back. (this verse does not necessarily mean that it has occured or was occuring)
Of note, Prophetic events are usually written in the present tense or future tense to show there inevitability. For example there are many examples of nations being cast into hell. These events have NOT YET HAPPEN yet they are spoken of as if they did happen already. What God is showing us is the inevitability of the events. God is independent of Time and Space. He controls it.
Another question is how do you know that the messenger spoken of in Sura 44 is Muhammad?

The Quran is not only meant for 'Muhammad's Generation" but also for FUTURE GENERATIONS. How do you know that this Sura was speaking or making reference to another messenger??? Show me one verse in that sura that specifies that Muhammad was the messenger. Also how can people (Europeans and Chinese) make a statement like " Educated(Taught and tutored) but Crazy" unless they knew who the person was? To make a statement about a person's character can only be made if you know the person yourself. Did the Chinese know the last prophet to make a statement like that?

? If so, where is your proof?
Peace,
Kevin