Qallu is an one of the ten clans of itu tribe Sheekhaal. Qallu (or Sheekhaal) is a tribe in the Horn of Africa in which the people (person) who are believed to be the descents of Sayyid Abu Bakr al-Siddiq, the first Caliph of Islam, are known in Eastern Ethiopia, Somalia and Djibouti.
Qallu is a common name known in Oromo, Somali, Afar traditions because there is a clan called "Qallu'' within each of these ethnic groups. However, it is the Somalis who enthusiastically refer to the name. It is said[who?] that "Qallu" (which means 'He said' in arabic; which is referred to beginning sayings or religious texts, such as qala Allah or qala arrasoel) is referring to "people of the religion" and it describes the Qallu's main occupation in their societies. That means in the past, most of the persons who belong to Qallu clan were dominantly the teachers of Islam in the areas that they reside.
The Qallu inhabit Hararghe, Somali Region, and Dire Dawa as well as the Republics of Somalia and Djibouti. The Qallu's in Ethiopia trace back their genealogy mostly to a man called "Aw Omar Ziyad", and then to "Aw Qutub", and Aw Abadir Umar Ar-Rida, a scholar to whom the Harari's refer as the Patron Saint of Harar. And all Qallus in Ethiopia claim they have the same blood with Sheekhaal, a clan whom Sir Richard Burton repeatedly mentioned in his book titled First Footsteps in East Africa. However, in Somalia, there is a little bit unclear tradition of the Qallus. Most people categorize them under the well known Sheekhaal clan. Others group them under Fiqi Omar clan, which also belong to the Sheekhaal.
Richard Burton describes that Qallu (Sheekhaash) is dispersed among its brothers (other clans) and they can be found from Ifat up to Ogaden. This is an exact description of the highly reverend clan of Qallu. Today, as Burton witnessed 150 years ago, the Qallu inhabit an area from Somalia up to Wello. However, the highly concentrated communities of the Qallu can be found in the following areas.