Khalifa al-Zanati was the Berber king of Tunis

Tunis

Tunis is the capital of both the Tunisian Republic and the Tunis Governorate. It is Tunisia's largest city, with a population of 728,453 as of 2004; the greater metropolitan area holds some 2,412,500 inhabitants....

 and one of the main characters in the Bani Hilal

Taghribat Bani Hilal

Taghribat Bani Hilal is an Arabic epic recounting the Banu Hilal's journey from Najd to Tunisia via Egypt and conquest of the latter. It is built around historical events that took place in the 11th century...

 epic

Epic poetry

An epic is a lengthy narrative poem, ordinarily concerning a serious subject containing details of heroic deeds and events significant to a culture or nation. Oral poetry may qualify as an epic, and Albert Lord and Milman Parry have argued that classical epics were fundamentally an oral poetic form...

. The epic says that during the siege of Bani Hilal to Tunis he asked their knights for duels every day and killed many of them, not even Abu Zayd al-Hilali

Abu Zayd al-Hilali

Abu Zayd Ibn Rizq Al-Hilali was a 11th century Arab leader and hero of the 'Amirid tribe of Banu Hilal.On the orders of the Ismaili Fatimid caliph, Abu Zayd moved his tribe to Tunisia via Egypt to punish the Zirids for adopting Sunniism. The Banu Hilali weakened largely the Zirid state and sacked...

 was able to defeat him. His destiny was to be killed by Dhieb bin Ghanim who thrust spear into his eyes. The epic also says that one of the reasons of his defeat was the betrayal of his daughter Sadaa who fell in love with Maree, one of the Hilalian princes who were captive in her fathers prison.