He bore the title Maliku'r-Raḥīm (King of the Merciful). He passed away this year in the month of Shaʿbān at the age of one hundred. He ruled Mosul for about fifty years. He was an intelligent, ingenious, and tactically skilled person. He worked against the children of his master and ultimately destroyed them. He brought an end to the Atabeg state in Mosul. After Hülagu left Baghdad following that dreadful and terrifying event, Badr al-Din Lu'lu' went to his service voluntarily. He had also brought gifts and presents with him. Hülagu showed him respect and bestowed favors upon him. After this, Badr al-Din departed from there, returned to Mosul, and after living a few more days in Mosul, he died and was buried in the Bedriyya madrasa. Because he was a good administrator, just, and generous, people were saddened by his death. Shaykh ʿIzz al-Din wrote his work al-Kāmil fī't-Tārīkh for him. In return for this work, Badr al-Din gave Shaykh ʿIzz al-Din gifts and bestowed favors upon him.
It has been seen that he gave gifts of 1,000 dinars to some poets. After him, his son Ṣāliḥ Ismāʿīl succeeded him. Badr al-Din Lu'lu' was Armenian. A tailor had purchased him. Later, he was given to the governor of Mosul, Malik Nureddin Arslanshah b. ʿIzz al-Din Masʿud b. Mawdud b. Zangī b. Aqsungur al-Atabegī. He was handsome in appearance. He was held in esteem by Malik Nureddin. He rose through the ranks of the state. Eventually, fortune smiled upon him. Envoys from various countries came to visit him. Then, he arranged assassinations against his master Malik Nureddin's children, killing them one by one, leaving none alive, and he himself ascended the throne independently; affairs went smoothly for him. Every year, he would send a golden lamp weighing 1,000 dinars to the tomb of ʿAlī. Despite being ninety years old, because his face was very radiant and his appearance beautiful, he looked youthful.
People gave him the nickname 'the golden whip.' He was of lofty ambition, a genius, very cunning and crafty. His sending a golden lamp every year to the tomb of ʿAlī is evidence that he was a Shīʿī. Allah knows best the truth.