Abdullahi Maje Karofi ɗan Dabo (; Abdullahi b. Ibrahim; c. 1815 – 1882) was Emir of Kano from 1855 until his death in 1882.; in Google Books.

Early life Abdullahi was born around 1815 to the Islamic scholar and Sullubawa leader Ibrahim Dabo and his concubine Shekara, a princess from the ousted Hausa dynasty in Daura. Shekara was regarded as Dabo's most influential spouse, and during his reign as emir of Kano (1819–1846) she acted as a close adviser, particularly in palace affairs. She is considered one of the most celebrated women in 19th century Hausaland. Besides Abdullahi, two of her other sons, Usuman and Muhammad Bello, later reigned as emirs of Kano.

Abdullahi was raised in the household of Dan Rimi Ibrahim Barka, a high-ranking slave official. Barka, formerly a slave of the ousted Hausa ruler Muhammad Alwali, was renowned in Kano as Emir Dabo's most trusted adviser.

As part of Dabo's efforts to restore old Hausa titles in order to centralise authority, he reinstated the title of Dan Buram and gave his son Abdullahi.

Galadima (1846–1855) Emir Ibrahim Dabo died in 1846, and his son Usuman was appointed as his successor by Caliph Ali Babba of Sokoto. Acting possibly on the advice of his mother Shekara, Usuman dismissed his father's Hausa galadima, Suleiman Ango, and appointed his younger brother Abdullahi as to replace him. Contemporary sources often described Usuman as "a lazy ruler" who over-relied on his advisers and palace officials, a portrayal frequently contrasted with the noted intelligence and administrative energy of his vizier Abdullahi. To counterbalance the Galadima's unusual influence, Usuman created a small "ministerial council" composed of senior officials, enabling him to retain authority over major decisions while delegating many routine civil and military matters to Abdullahi.

When the European explorer Heinrich Barth visited Kano during Usuman's reign, he found the palace filled with "hundreds of lazy, arrogant courtiers, free men and slaves [...] lounging and idling here, killing time with trivial and saucy jokes". Galadima Abdullahi visited the palace daily to administer the government in offices and audience chambers reserved for his official duties. He also met regularly with Usuman for consultations, directives, and the reception of distinguished visitors, including the Waziri of Sokoto, the Caliph's chief vizier, whose duties included overseeing Kano affairs.

In his role as Galadima, Abdullahi occasionally commanded the Kano army in military campaigns. The most notable was around 1853, when he led the Kano contingent of the Caliphate's force against the rebel ruler of Hadejia, Buhari. According to Barth's estimates, Usuman could mobilise roughly seven thousand cavalry and twenty thousand infantry. Documents from Miga (in present-day Jigawa State) suggest that the allied force fielded about twenty thousand horses. In the ensuing Battle of Kaffur, the Caliphate's army, which was its largest force up to that time, suffered a severe defeat. Buhari's troops killed three sons of the Emir of Kano, seventeen sons of Kano's leading chiefs, and a grandson of Caliph Ali. A near contemporary account describes Buhari's surprise attack and that, as the rebel war drums sounded, "Galadiman Kano's army began to flee. Instead of bridling their horses' fronts they bridled their tails [...] Some climbed into trees and were caught in them and killed or enslaved."

In 1855, Caliph Ali Babba assembled another large force against Hadejia and appointed Usuman as its commander. The armies met at Ringim, where Buhari once again inflicted a devastating defeat, during which Usuman was killed. Abdullahi, who had accompanied his brother on the campaign, returned to Kano to await the arrival of the waziri of Sokoto, Halilu, who would deliver the caliph's letters confirming the appointment of the new emir.

Emir (1855–1882)

Accession Following the death of Emir Usuman, customary practice required the Limam (chief imam) to assume charge of the government until a new emir was appointed. However, upon returning from the Hadejia campaign, Abdullahi continued the administration of government much as he had during Usuman's reign. Although he may have acknowledged the nominal regency of Limam Sule, this arrangement effectively left control of Kano's resources and affairs in his hands. The authority to appoint successive emirs rested with the Caliph of Sokoto and his vizier, the waziri, who acted as the caliph's representative in Kano. When Waziri Abd al-Qadir b. Gidado arrived in the city, he convened the princes and leading officials at the central mosque. In accordance with established protocol, he carried two letters from the caliph: the first conveyed greetings to the assembly and condolences on the death of the emir; the second named the individual chosen to succeed as emir.

From his conversations with the waziri and "other sources," Abdullahi inferred that he had not been selected. The name reported to be in the second letter was 'Abdusallami', possibly referring either to the Turaki (Abdullahi's brother) or to a Mundubawa prince (a descendant of the first emir Suleimanu), both of whom had that name. Unwilling to accept being passed over, Abdullahi armed himself, prepared his cavalry and proceeded to the mosque with spear and sword, flanked by his royal slaves in armour. He entered the mosque and greeted the waziri, who directed him to take a seat; Abdullahi refused and stood hand on his sword. The waziri assured him that he was the chosen emir; yet when the magatakarda (chief scribe) attempted to read the second letter aloud, one of the waziri's attendants was reportedly injured or killed by Abdullahi's slaves. The waziri then took the letter and read it to the assembly, declaring Abdullahi the new emir without any sign of opposition. Abdullahi then took his place on the emir's dais. The contents of the second letter were never made public, as Abdullahi tore it up immediately afterward.

Abdullahi gave the waziri the caliph's portion of Usuman's estate together with valuable gifts. When Abd al-Qadir returned to Sokoto, he was warmly welcomed by Caliph Ali Babba, who had already been informed of the events in Kano and approved of the waziri's handling of the situation. Sokoto considered Abdullahi's appointment a small concession in exchange for maintaining stability in Kano, the economic centre of the Caliphate. A succession dispute risked driving Abdullahi into alliance with Buhari of Hadejia or even with Bornu, while also encouraging further unrest from the increasingly powerful Ningi chiefdom along Kano's frontier. The waziri's decision to change the successor on the spot was regarded as legitimate because, as the caliph's representative in the emirate, he exercised wide discretionary powers, especially during such emergencies. As a public sign of approval, the caliph gave his daughter Saudatu in marriage to Abd al-Qadir.

Around 1856, during one of his visits to the region, the caliph summoned Abdullahi to Katsina for their first meeting since Abdullahi's accession. Abdullahi arrived with his forces and quartered them in the town before going, as required by custom, to pay respects to the caliph. After several hours of waiting, an order came from Ali instructing Abdullahi to remove his troops to nearby villages. Three days later, Ali summoned him without an escort. Abdullahi found the caliph seated in an inner hall of the Katsina palace among the Caliphate's senior councillors. According to tradition, Abdullahi presented himself, sat down, and greeted the caliph humbly. After a pause, Aliyu remarked three times, "Abdullahi, you seized the throne by force," ("Ka ci da karfe"), to which Abdullahi astutely replied, "I took it with your blessing (approval)," ("Na ci da albarkarka"). Aliyu then asked Abdullahi why he had camped outside the town. Abdullahi replied that he had been ordered to do so. Aliyu then asked why Abdullahi had come to see him. Abdullahi replied that he had been ordered to do so. On this, Aliyu said, "Then why did you remain in the Gidan Rumfa (palace) after Usuman had died?" Abdullahi apologised and attempted to excuse himself. Aliyu then sent to Kano, ordering the non-royal state councillors to Katsina at once. On their arrival, he consulted with them about Abdullahi's accession.After hearing their support for Abdullahi, the caliph formally confirmed him as emir at the Katsina palace, either shortly before or immediately after the joint campaign against Maradi. As a sign of reconciliation and goodwill, Ali married his eldest daughter to Abdullahi.

Military conflicts and establishment of ribats Abdullahi devoted much of his early reign to repelling attacks from the Damagaram Sultanate and the Emirate of Gumel in the northeast, as well as the increasingly serious threat posed by Ningi. In 1854–55, the ruler of Damagaram, Tanimu, launched an attack on northern Kano territory but was repelled, largely because his cavalry struggled with the marshy terrain. The campaign became known as Yakin Ruwa ("War of Water"). Tanimu returned in 1857, sacking Duguyawa before moving north to attack Kazaure, where he killed the emir Dambo, likely in an attempt to secure his submission and vassalage. After this, Damagaram left Kano in relative peace for over thirty years. During Abdullahi's reign, Kano also faced persistent raids from Maradi, led by its formidable ruler Dan Baskore (1854–1875).In 1855, the Ningi Chiefdom carried out a particularly devastating raid, penetrating well within twenty miles of Birnin Kano. On their return, they were intercepted at Tugugu by Sarkin Rano Aliyu, who inflicted heavy losses and recovered much of the looted booty. Two years later, however, Ningi forces defeated and killed Aliyu during an attack on Rano and went on to ravaged the area. Ningi remained active in 1856, destroying crops and settlements, and enslaving several captives. In 1860, they destroyed the newly founded town of Tudun Wada. To contain these incessant attacks, Abdullahi established a chain of ribats (frontier military settlements) along the Ningi route into Kano. For two years, he founded and repaired ribats at Sumaila, Tudun Wada, Falali, Matugwai, Birnin Bako, and Takai. These were garrisoned with substantial forces and functioned as fortified military colonies. Scholars were appointed as imams, judges, legal inspectors, and teachers. Many of the ribats became populated largely by slaves captured during the Ningi wars, some of whom developed extensive plantations to support the settlements. The policy of frontier ribats was well established across the Caliphate and had earlier been introduced into Kano by Abdullahi's father Ibrahim Dabo.