Uthman the Abyssinian (Arabic: عثمان الحبشة) was the Emir of Harar who ruled the Adal Sultanate, from 1567 to 1569.
He reportedly permitted wine drinking and appropriated the considerable wealth Nur had bequeathed for the city's orphans.
[1][2] A local official of Aussa named Jibril soon defected and denounced what he considered Uthman's transgressions against Islamic law.
The conflict came to a head when a local Muslim woman who had been taken by the pagan Oromos arrived as a refugee to Aussa.
This rebellion was continued by Tahla Abbas, the grandson of Abun Adashe, who defeated Uthman and seized power in 1569.