Accession In 714, al-Walid, encouraged or supported by al-Hajjaj, attempted to install his son
Abd al-Aziz as his successor, voiding the arrangements set by Abd al-Malik, which made Sulayman heir apparent. According to the historian
Umar ibn Shabba (d. 878), al-Walid offered Sulayman generous financial incentives to agree to the change, but he refused. Al-Walid, nonetheless, issued requests to his provincial governors to recognize Abd al-Aziz, but only received favorable responses from al-Hajjaj and
Qutayba ibn Muslim, the governor of Khurasan and conqueror of
Transoxiana. An adviser of al-Walid,
Abbad ibn Ziyad, counseled the Caliph to pressure Sulayman by summoning him to the Caliph's court in
Damascus, and then, after Sulayman stalled in his response, to mobilize his (select troops) and move against Sulayman in Ramla. Al-Walid died shortly after, on 24 February 715. Sulayman received the news at his estate in al-Sab' (
Bayt Jibrin), and acceded to the caliphate unopposed. Sulayman obtained oaths of allegiance in Ramla, and in Damascus during his only recorded visit to that city. He continued to govern from Palestine, where he "was much beloved", in the words of the historian
Julius Wellhausen, instead of Damascus, the Umayyads' traditional administrative capital. The historian Reinhard Eisener asserted that the medieval "Syrian sources prove he obviously chose Jerusalem as his principal seat of government", while Wellhausen and the historian
Hugh N. Kennedy held that he remained in Ramla.
Provincial politics and its provinces (in green), In his first year in office, Sulayman replaced most of al-Walid's and al-Hajjaj's provincial appointees with governors loyal to him. It is unclear whether these changes were the result of resentment and suspicion toward previous opponents of his accession, a means to ensure control over the provinces by appointing loyal officials, or a policy to end the rule of strong, old-established governors. While Eisener argued Sulayman's "choice of governors does not give the impression of bias" toward the Yaman faction, Kennedy asserted that the Caliph's reign marked the political comeback of the Yaman and "reflected his Yamani leanings". One of his immediate decisions was to install his confidant, Yazid ibn al-Muhallab, as governor of Iraq. According to the historian Muhammad Abdulhayy Shaban, Sulayman considered Yazid to be his "own al-Hajjaj". Yazid acted with a staunch preference for the Yaman, but according to Wellhausen, there is no indication that Sulayman favored one faction over the other. Wellhausen held that Sulayman, from the time he was governor of Palestine, "may have been persuaded" that the rule of al-Hajjaj engendered hatred among the Iraqis toward the Umayyads rather than fostering their loyalty. Sulayman thus opposed him and his influence and deposed his appointees and allies, not because of their Qaysi affiliation, but because of their personal connection with al-Hajjaj. Sulayman kept close ties with the Qaysi troops of the Jazira. A protege of al-Hajjaj, Qutayba ibn Muslim, whose relations with Sulayman had been antagonistic, was confirmed in his post by the Caliph, but remained wary that his dismissal was pending. At the time of Sulayman's accession, he had been leading his troops on an expedition toward the
Jaxartes valley in Transoxiana. While stopping in
Ferghana, he declared a rebellion against Sulayman, but most of his troops, exhausted by the constant campaigns into distant lands, turned against him. Qutayba was killed by an army faction led by
Waki ibn Abi Sud al-Tamimi in August 715. Waki declared himself governor of Khurasan, and was confirmed by Sulayman, but the latter restricted his authority to military affairs. Sulayman was concerned that Waki's nomination by the tribal factions of the Khurasani army (rather than by his own initiative) would lead to instability in the province. Meanwhile, al-Hajjaj's kinsman and leader of the conquest of
Sind,
Muhammad ibn al-Qasim, did not revolt against Sulayman, but was nonetheless dismissed, summoned to
Wasit, and tortured to death. of the
Umayyad Caliphate, minted in the
caliphal province of Sind (probably at
Multan), and dated 97
AH/ 715–16 CE: the obverse circular legend reads
"In the name of Allah, struck this dirham in al-Hind () in the year seven and ninety". Waki's provisional governorship lasted nine months, ending in mid-716. Yazid had persuaded Sulayman that Waki was a troublesome
Bedouin (Arab nomad) lacking administrative qualities. Khurasan, along with the other eastern parts of the Caliphate, were attached to Yazid's Iraqi governorship. The Caliph directed Yazid to relocate to Khurasan and leave lieutenant governors in the Iraqi
garrison towns of
Kufa,
Basra and Wasit, while entrusting Iraq's fiscal affairs to his own appointee, a (pl. ; non-Arab freedman or client) with lengthy experience in the province,
Salih ibn Abd al-Rahman. Between 715 and 716, Sulayman dismissed
Khalid ibn Abdallah al-Qasri and
Uthman ibn Hayyan al-Murri, the respective governors of Mecca and Medina, both of whom owed their appointments to al-Hajjaj. Khalid, later considered a champion of the Yaman, was replaced by an Umayyad family member, Sulayman's brother-in-law
Abd al-Aziz ibn Abdallah ibn Khalid ibn Asid. In the west, Sulayman dismissed
Musa ibn Nusayr, the Yamani-affiliated governor of
Ifriqiya and
conqueror of Hispania (
al-Andalus), and his son
Abd al-Aziz, the governor of al-Andalus. Musa was imprisoned by Sulayman upon his accession and Abd al-Aziz was assassinated on Sulayman's orders in March 716. The assassination order was carried out by some of the leading Arab commanders in al-Andalus, including Abd al-Aziz's top lieutenant
Habib ibn Abi Ubayd al-Fihri. Al-Tabari held that Habib delivered Abd al-Aziz's head to the Caliph. Sulayman installed a of the Quraysh in place of Musa, and under his order, the new governor confiscated the wealth of Musa's family in Ifriqiya and had them tortured and killed. Musa had a history of embezzling funds during his career and Sulayman extorted considerable sums from him during his imprisonment.
War efforts and
Jurjan along the southern
Caspian coast during Sulayman's reign. The areas shaded in lime green, pink, purple, yellow and orange depict areas conquered under Sulayman's predecessors. Although he largely replaced their governors, Sulayman maintained his predecessors'
militarist policies. Nonetheless, during his relatively short reign, the territorial expansion of the Caliphate that occurred under al-Walid virtually came to a halt.
Transoxiana On the eastern front, in Transoxiana, further conquests were not achieved for a quarter century after Qutayba's death, during which time the Arabs began to lose territory in the region. Sulayman ordered the withdrawal of the Khurasani army from Ferghana to
Merv, and its subsequent disbandment. No military activity was carried out under Waki. Under Yazid's deputy in Transoxiana, his son
Mukhallad, expeditions were limited to summertime raids against
Sogdian villages. The historian
H. A. R. Gibb attributed the Arab military regression in Transoxiana to the void in leadership and organization left by Qutayba's death. Eisener partly attributed it to more effective resistance along the frontiers. The halt in the conquests was not an indication that "the impulse of expansion and conquest slackened" under Sulayman, according to Eisener.
Jurjan and Tabaristan In 716, Yazid attempted to conquer the principalities of
Jurjan and
Tabaristan, located along the southern coast of the
Caspian Sea. Ruled by local Iranian dynasties and shielded by the
Alborz Mountains, these regions had remained largely independent of Muslim rule, despite repeated attempts to subdue them. The campaign lasted for four months and involved a 100,000-strong army derived from the garrisons of Kufa, Basra,
Rayy,
Merv and Syria. It marked the first deployment of Syrian troops, the elite military faction of the Caliphate, to Khurasan. Yazid defeated the Chöl Turks north of the river
Atrek, and secured control of Jurjan by founding a city there (modern
Gonbad-e Kavus). In a letter, Yazid congratulated Sulayman on the conquests of the two territories, which had eluded previous caliphs until "God made this conquest on behalf" of Sulayman. Yazid's initial success was reversed by Tabaristan's ruler,
Farrukhan the Great, and his coalition from neighboring
Daylam,
Gilan, and Jurjan in later confrontations that year. Afterward, Yazid withdrew Muslim troops from the region in return for a tributary arrangement with Farrukhan. Tabaristan remained independent of Arab rule until 760, when it was conquered by the
Abbasids, the successors of the Umayyads, but remained a restive province dominated by local dynasts.
Siege of Constantinople The Caliph's principal military focus was the perennial war with Byzantium, which was not only the largest, richest, and strongest of the Caliphate's enemies, but also directly adjacent to Syria, the center of Umayyad power. The Umayyads'
first attack on the Byzantine capital,
Constantinople, under Mu'awiya I had failed. Nevertheless, from 692 onwards, the Umayyads had been on the offensive, secured control of
Armenia and the
Caucasian principalities, and gradually encroached upon the borderlands of the empire. Umayyad generals, often members of the ruling family, raided Byzantine territory every year, capturing towns and fortresses. Aided by a
prolonged period of instability in Byzantium, by 712, the Byzantine defensive system began to show signs of collapse, as Arab raids penetrated ever deeper into
Asia Minor. Following the death of al-Walid I, Sulayman took up the project to capture Constantinople with increased vigor. In late 716, upon returning from the Hajj pilgrimage to Mecca, Sulayman encamped and mobilized his army in
Dabiq in
northern Syria. From there, he oversaw the massive war effort against the Byzantines. Being too ill to lead the campaign in person, he dispatched his half-brother
Maslama ibn Abd al-Malik to
besiege the Byzantine capital from the land, with orders to remain until the city was conquered or he was recalled by the Caliph. Already from early 716, the Arab commander
Umar ibn Hubayra al-Fazari had launched a parallel naval campaign against Constantinople. While many troops were dispatched toward the Byzantine capital, Sulayman appointed his son Dawud to lead a summer campaign against the Byzantine frontier in 717, during which he captured Hisn al-Mar'a ("the Woman's Fortress") near
Malatya. Sulayman's efforts ultimately failed. The Byzantines repulsed the Umayyad fleet from Constantinople in the summer of 717, while Maslama's army maintained its siege of the city. Umayyad fleets sent in the summer of 718 to aid the besiegers were destroyed by the Byzantines, while an Umayyad relief army was routed and repulsed in Anatolia. Having failed in the siege, Maslama's army withdrew from Constantinople in August 718. The massive losses incurred during the campaign led to a partial retrenchment of the Umayyad forces from the captured Byzantine frontier districts, but already in 720, Umayyad raids against Byzantium recommenced. Nevertheless, the goal of conquering Constantinople was effectively abandoned, and the frontier between the two empires stabilized along the line of the
Taurus and
Anti-Taurus Mountains, over which both sides continued to launch regular raids and counter-raids during the next centuries. ==Death and succession==