Information: - Muhammad (c.570 CE 8 June 632 CE) is the central figure of Islam and widely regarded as its founder by non-Muslims. He is known as the "Holy Prophet" to Muslims, almost all of whom consider him to be the last prophet sent by God to mankind to restore Islam, believed by Muslims to be the unaltered original monotheistic faith of Adam, Abraham, Moses, Jesus, and other prophets. Muhammad united Arabia into a single Muslim polity and ensured that his teachings, practices, and the Quran, formed the basis of Islamic religious belief. - Islam (' ;) is a religion articulated by the Quran, a text considered by its adherents to be the verbatim word of God ('), and, for the vast majority of adherents, the teachings and normative example (called the "sunnah", composed of accounts called "hadith") of Muhammad (5708 June 632 CE). It is the world's second-largest religion and the fastest-growing major religion in the world, with over 1.7 billion followers or 23% of the global population, known as Muslims. Islam is an Abrahamic monotheistic religion that upholds that God is one and incomparable and that the purpose of existence is to worship God. Muslims consider Muhammad to be the last prophet of God. - Origins. "Amir", meaning "Lord" or "commander-in-chief", is derived from the Arabic root "", "command". Originally simply meaning commander-in-chief or leader, usually in reference to a group of people, it came to be used as a title for governors or rulers, usually in smaller states, and in modern Arabic is analogous to the English word "prince". The word entered English in 1593, from the French "emir". It was one of the titles or names of the Islamic prophet Muhammad. - The Abbasid Caliphate (or "") was the third of the Islamic caliphates to succeed the Islamic prophet Muhammad. The Abbasid dynasty descended from Muhammad's youngest uncle, Abbas ibn Abd al-Muttalib (566653 CE), from whom the dynasty takes its name. They ruled as caliphs, for most of their period from their capital in Baghdad in modern-day Iraq, after assuming authority over the Muslim empire from the Umayyads in 750 CE (132AH). - Abu ' l - Asakir Jaysh ibn Khumarawayh ( Arabic : ; born c. 882 ) was the third Emir of the Tulunids in Egypt , ruling briefly in 896 . The eldest son of Khumarawayh ibn Ahmad ibn Tulun , he succeeded him early in 896 at the age of fourteen . Soon afterwards he ordered the execution of his uncle Mudar ibn Ahmad ibn Tulun . After ruling for only a couple of months the faqihs and qadis declared him deposed and he was killed in November 896 , along with his vizier Ali ibn Ahmad al - Madhara'i . He was replaced with his younger brother Harun . - A caliphate ("khilfa") is an area containing an Islamic steward known as a caliph ("" )a person considered a religious successor to the Islamic prophet, Muhammad (Muhammad ibn Abdullh), and a leader of the entire Muslim community. The Rashidun caliphs, who directly succeeded Muhammad as leaders of the Muslim community, were chosen through "shura, "a process of community consultation that some consider to be an early form of Islamic democracy. During the history of Islam after the Rashidun period, many Muslim states, almost all of them hereditary monarchies, have claimed to be caliphates. - Harun ibn Khumarawayh (died 30 December 904) was the fourth Tulunid ruler of Egypt (896904). He succeed his elder brother Abu 'l-Asakir Jaysh, who had been murdered by army chiefs. He left state affairs to the vizier Abu Ja'far ibn Ali, preferring to live a life of dissolute luxury. This led to a growing crisis in the country, since state finances could not be regulated and the army leaders gradually accrued more power to themselves - The Tulunids were a dynasty of Turkic origin and were the first independent dynasty to rule Islamic Egypt, as well as much of Syria. They remained independent from 868, when they broke away from the central authority of the Abbasid dynasty that ruled the Islamic Caliphate, until 905, when the Abbasids restored the Tulunid domains to their control. - Abu 'l-Jaysh Khumrawayh ibn Amad ibn ln (864 18 January 896) was a son of the founder of the Tulunid dynasty, Ahmad ibn Tulun. His father, the autonomous ruler of Egypt and Syria , designated him as his successor. When Ibn Tulun died in May 884, Khumarawayh succeeded him, and after defeating an attempt to depose him, in 886 he managed to gain recognition of his rule over Egypt and Syria as a hereditary governor from the Abbasid Caliphate. In 893 the agreement was renewed with the new Abbasid Caliph, al-Mu'tadid, and sealed with the marriage of his daughter Qatr al-Nada to the Caliph. At the height of his power, Khumarawayh's authority expanded from the Byzantine frontier in Cilicia and the Jazira to Nubia. Domestically, his reign is marked by a prodigal squandering of funds on extravagant displays of wealth, construction of palaces, and patronage of artists and poets. In combination with the need to maintain a sizeable professional army and guarantee its loyalty through rich gifts, by the end of his reign the treasury was left empty. Khumarawayh was murdered by a palace servant in 896, and was succeeded by his son Jaysh, who was deposed after a few months in favour of another son, Harun ibn Khumarawayh. The Tulunid state entered a period of turmoil and weakness, which culminated in its reconquest by the Abbasids in 904905. What is the relationship between 'abu 'l-asakir jaysh ibn khumarawayh' and 'harun ibn khumarawayh'?
Answer:
brother