AHC: Islamoscrew

as before, i'd like to ask how to screw over the authority of overly successful religions. my aim here is simple.

Islam has been said to be one of those things that would be considered ASB.

with a PoD no earlier than Muhammad's death, what are the most spectacular ways to screw the ummah?

(i don't hate islam. i've asked how to screw over the Catholic Church, and i'm a Catholic.)
 
as before, i'd like to ask how to screw over the authority of overly successful religions. my aim here is simple.

Islam has been said to be one of those things that would be considered ASB.

with a PoD no earlier than Muhammad's death, what are the most spectacular ways to screw the ummah?

(i don't hate islam. i've asked how to screw over the Catholic Church, and i'm a Catholic.)

Just have the Ridda Wars see far more destruction and Abu Bakr fail at defeating them. With that you can split up Islam into a huge amount of infighting sects, preventing the unity they had which helped them conquer most of the Middle East. There was only a short window where Abu Bakr was able to exploit the exhaustion of the Sassanids and Byzantines to expand Islam into anything more than a local Arabian religion and the Caliphate into an Empire.
 
It was discussed a bit there.

Basically, harsher Ridda Wars (it would be hard to do that honestly) associated with a more important succession crisis between Mohagerins and Ansarian (respectivly early followers of Muhammad and Medinits) could delay enough the earlier Caliphate success that Byzantines would have the time to be aware of an eventual threat.

Persia defeat was more or less a given with a PoD later than 632, but I could see Arab conquests being limited to Egypt and Syria westwards.

That said, an earlier of Muhammad (would it be only by the end of 620's) would allow Islam to still exist while more surely provoking above changes.
 
Having the Mongol conquests permanently de-Islamizing Iran might work. They apparently killed an enormous percentage of the population, replaced mosques with Buddhist temples, etc.

You want something spectacular (but historically tricky, especially the later the divergence), that might work.
 
Have Babak Khoramdin's revolution be successful. Simply that. It will inspire more Persians to rise up against the Arabs, at a time when the population was still more than 70% Zoroastrian.
 
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