Along with Alauddin's brother Ulugh Khan, he led the army that invaded Multan to eliminate the surviving members of Jalaluddin's family.

[3] After taking control of the throne in Delhi, Alaudidn appointed Zafar Khan as Ariz-i-Mumalik (Minister of War).

[2] After establishing his power in Delhi, Alauddin decided to eliminate Jalaluddin's surviving family members, who were in Multan.

[7] (Zafar Khan's name was omitted in the dynasty's official chronicles because Alauddin was unhappy with his reckless disobedience during the Battle of Kili).

[8] The Delhi army decisively defeated Mongols with on 6 February 1298 at Jaran-Manjur, a place located on the banks of the Sutlej River.

[8] In 1298–1299, a Mongol army (possibly Qara'unas fugitives) led by Saldi invaded the Sindh region, and occupied the fort of Sivistan.

[8] Despite a barrage of arrows from the Mongols and despite not making use of any siege engines, Zafar Khan's army captured the fort using short ranged weapons like axes, swords, javelins, and spears.

[13] According to Barani, Alauddin thought of sending Zafar Khan away from Delhi, by ordering him to conquer and govern Bengal.

[16] Alauddin's strategy was to delay the battle, as he was expecting reinforcements to arrive from his provincial armies, and hoped that scarcity of provisions would ultimately force the Mongols to retreat.

He asked his generals not to make a move without his orders, but Zafar Khan disregarded these instructions, and attacked one of the Mongol contingents.

[17] Finding themselves in a tough situation, Zafar Khan and his companions determined that a return to the Delhi camp was not possible, and even if it happened, Alauddin would punish them for disobedience and cowardice.

[8] Nobody in the Delhi court praised Zafar Khan's gallantry; on the contrary, Alauddin denounced his recklessness and disobedience.

[8] While describing the military victories accomplished during Alauddin's reign, Khusrau completely omits the Siege of Sivistan which established Zafar Khan's reputation as a general.

[10] In 1301, when Alauddin was at Ranthambore, a group of Zafar Khan's followers helped his officer Malik Hamiduddin suppress Haji Maula's rebellion in Delhi.

[26] After Alauddin's death, his son Qutb ud din Mubarak Shah bestowed Zafar Khan's title on Malik Dinar, who had earlier served as the Sultanate's master of the elephants (Shihna-yi pil).