The story of the dispute between "Muhammad al-Amin" and "Abdullah al-Ma'mun", the sons of the Abbasid Caliph "Harun al-Rashid", began when "Harun al-Rashid" assumed the secretary of the mandate of the covenant and then "Al-Ma'mun", There was also another crown prince, who was the brother of "Al-Amin" and "Al-Ma’mun", and was known as "Al-Mu’taman",
But the dispute between the "Al-Amin"and "Al-Ma'mun" on the rule of the Abbasid state, when the "Al-Amin"began to rule from Baghdad as an Abbasid caliph, his brother al-Ma'mun was trying to exclusivity in the rule of Khorasan,
And what contributed to the development of this dispute was the appointment of "Musa Son of Al-Amin" as a guardian For the covenant, and after many correspondences between "Al-Amin" and "Al-Ma'mun", war was decided
And both "Al-Amin" and "Al-Ma'mun" met in the "Al-Rai" area, which is one of the cities of Iran,
And the battle was won by the army of "Al-Ma'mun", led by "Taher bin Al-Hussein",
After that Baghdad was besieged by the army of "Al-Ma'mun" for more than a year until they were able to enter it and capture and kill the Caliph "Al-Amin", and thus the end of the Caliph "Al-Amin" is a story
Wah Mutassim
In the year 223 AH screamed a Muslim woman who was a prisoner of the Byzantines ( Wah Mutassim )
Mutasimah which shouted him is the Abbasid Caliph "Al-Mu'tasim Billah", who moved the armies for a cry that reached his ears.
And resulted in that cry a great conquest which is the opening of "Amoriyah" located in Asia Minor, has been ruled by Amoriyah Romans Byzantines, and this woman was receiving torture from the ruler of Amoriyah shouted the name of Al-Mu'tasim Abbasid Caliph, which prompted him to go to the region and rid it of the Romans,
Already move the Abbasid Caliph Al-Mu'tasim Billah and led his army and besieged Amorite, Al-Mu'tasim Billah was able to enter Amoriyah and crush the Romans, and he saved the woman from the hands of the Byzantine ruler of Amoriyah and Qaltha after the siege that lasted 55 days, this cry was a story from a collection of stories from Arab history
