He apparently acceded in the aftermath of the Elamite overthrow of the Kassite Dynasty.
His name and length of reign are most clearly ascertained from the Babylonian King List C[i 1] which gives 18 years for his rule.
[b] The name of the dynasty, BALA PA.ŠE, is a wordplay on the term išinnu, “stalk,” written as PA.ŠE and is the only apparent reference to the actual city of Isin as the seat of their rule was elsewhere.
[3] He should not be confused with the Middle-Assyrian scribe of the same name who authored two documents[i 2] in the library of Tukultī-apil-Ešarra around 30 years later.
After seeing off the Elamites, he turned his attention to Assyria and the north, capturing the city of Ekallatum.