The Medurubari Purge was the result of the annexation of the city of Medurubar by the Kingdom of Irrliam. After the Partition of Kalib, Medurubar had been an independent city where many theologians gathered, notably the heirs of those who had opposed the Surkaniš and did not believe in Jaher being the reincarnation of Surakel. The Council of Brasan of 1201 branded them as heretics because of the codification of what would become the New Sun Cult. Worried about being found out but conflicted with violating the tenet of the Cult which asked the faithful to speak no lies. The clerics of Medurubari summarized their doctrine of Ašanu (Bulwari for Sheltering) with the sentence : "we smile in the face of some people although our hearts curse them,", considering that Surakel knew that they did not lie in their hearts and worked to shelter the Light. However, it was hard for many followers to answer the questions of the Examplars that led investigations against heretics throughout Bulwar, unmasking the Ašanists by asking if they believed that there was only one God Surael and Jaher was his reincarnation.
Wary of the reports on heretics in a city so strategic, Taelarios of Irrliam moved in with his personal guard composed of the Order of the Zenith to root out the heretics in 1220. Having exposed links between the Judges ruling Medurubar and the Cultists, he proclaimed the annexation of Medurubar and installed his court in the city, overseeing the judgments of heretics and their death on the pyres. All the clergy and the political elites were condemned to death, following short and rushed investigations, along with many of the poor classes, some estimates going as far as a quarter of the city sent to their death. Medurubar became the seat of the Order of the Zenith and the capital of the Kingdom of Irrliam, and became notable for becoming the most Orthododox city of the new Sun Cult, even after the Jaddari conquest of the Suran. Amongst the notable escapees of the purge was the young Ashuru szal Harumanz.