I've read many things . Explain to me why "Marc" would have sources that none scholars talk about?
You need to ask them but that Abd Al Malik might have been an usurper is nothing new to the field of islamic studies if one has done his homework ; in this book, the author talk about the rebellion of Abd al Malikhttps://www.amazon.com/Abd-al-Malik-Makers-Muslim-World/dp/1851685073
You need to educate yourself on the topic.
Especially sources that you ask to search 6 month ago in a forum because you do not want to re give them. Why? Because one have to search for the Graal.
No I gave a specific source, not for someone to ask the same question again, and probably again in a few months. So the source is on the forum ; it will take you 5 mns to find it.
The sources you have can be explained otherwise, they are not specific to what you think which is a construction backed up by Volker Popp and Raymond Dequin. Scholars who inspire you.
It has nothing to do with them. You are just making conjecture because of your narrative, like Gallez.
But for me this stuff (calendar) are details.
The calendar of a new "religion"/group of people is never a detail for a scholar. It does tell a lot about it/them.
As you do not want to say what you're talking about... I'm sure that it can contradict all what you want. Am I right?
So you don't know about the issue of the dating of the battle of Dhi Qar ; you haven't been doing your homework then and it is surprising because I gave you a link on the topic a few months ago. It seems you don't read or you don't care when it goes agains your narrative. After reading it, you shouldn't be mentionning Dhi Qar as the start of the muslim calendar or even as the start of the Arab-Sassanian conflict (Pourshariati has another explanation for that).
Subsequently, at an indeterminate date, an open clash between the Persians and their Arab auxiliaries, on one hand, and Arab tribesmen, on the other, occurred at Ḏū Qār. According to certain Muslim traditions, the battle took place in the year 1/623 or 2/624 (Ḥellī, pp. 158, 192). Ebn Ḥabīb (p. 360) dated it earlier, between 606 and 622, but modern scholars have narrowed this range to 604-11 (Rothstein, p. 123; Caussin de Perceval, p. 184; Bosworth, p. 608).
Some scholars, apparently influenced by the Muslim tradition (e.g., Ḥellī, p. 422; Yaʿqūbī, II, p. 46), have interpreted the battle of Ḏū Qār as part of a prolonged Arab rebellion against the Persians, which culminated in the Muslim conquest of the Persian empire. As Šaybānī tribesmen, led by Moṯannā b. Ḥāreṯa, assisted in the conquest of Iraq, it has been argued that the Bakr, and especially the Šaybān, had followed a distinct anti-Sasanian policy since Ḏū Qār. Fred Donner has shown (pp. 28-30), however, that the Šaybān who supported the Muslims and those who were prominent at Ḏū Qār belonged to different, even rival clans; some Šaybānī leaders allied themselves with the Persians after Ḏū Qār, and others even opposed the Muslims during the conquest of Iraq. The battle of Ḏū Qār thus appears to have had ideological and symbolic meaning for the Arabs far beyond its military and political significance.
In summary, no "grounded" sources to state that :
- Dhi Qar is the start of the Arab calendar,
- Dhi Qar is the start to the Arab/Sassanian war