[2] He was nominated to the throne by Abu Sa'id's vizier Ghiyas al-Din and was elected 5 days later with a regnal title Sultan Muiz al-Dunya wa'l Din Mahmud on Karabakh.

[3] Another execution was of Mahmudshah Inju, former ruler of Fars province in March 1336 (he was imprisoned by Abu Sa'id earlier because of his attempt on ilkhan's life).

[4] His rule was not accepted by a part of Oirats, whose leader and the governor of Baghdad – Ali Padshah was an uncle of Abu Sa'id and had his own designs on the throne.

Claiming Abu Sa'id's wife Dilshad Khatun was still pregnant, he raised Musa, the grandson of Baydu as rightful heir to the throne.

The battle was a defeat for Arpa and soon after he was captured in Sultaniya and killed on 15 May 1336 by Mahmudshah's son, Amir Jalal al-Din Mas'ud Shah.