Bët mÃÂseri, inscribed bit me-se-ri<sup>meà ¡</sup> and meaning âÂÂHouse of Confinementâ or âÂÂDetention,â is an ancient Mesopotamian ritual incantation text complete on four cuneiform tablets for the protection of the house against invading evil. The earliest extant copies are neo-Assyrian, from the library of Ashurbanipal, where, according to its ritual tablet, it was to be conducted regularly in the months of Taà ¡rëtu and Araḫsamna, but there is also a late Babylonian (4th or 3rd century BC) rescension recovered from the house of a priest in Uruk and copied by Anu-iká¹£ur, kalû, or incantation priest, son of à  amaà ¡-iddin, descendant of à  angû-Ninurta. It is one of the works cited in the Exorcists Manual as forming part of the curriculum of the ÃÂà ¡ipu, or exorcist.
In contrast to the incantation à ¡ÃÂp lemutti ina bët amÃÂli parÃÂsu, âÂÂto block the foot of evil into a manâÂÂs house,â which provides the ritual to be performed to protect a house from demonic attack, bët mÃÂseri prescribes the activities to be performed when someone has already become ill, which was assumed to be under demonic assault. The first tablet is extant in fragmentary form and probably included the incipits to the incantations on the other three tablets. Offerings are made to Ea, à  amaà ¡ and Marduk and there is a purification of âÂÂall the statues of wood and [clay] that you have made.âÂÂ
The second tablet includes an instruction for the ÃÂà ¡ipu conducting the ritual – to impersonate the god Marduk: à ¡iptu à ¡ipat Marduk ÃÂà ¡ipu á¹£alam Marduk, "The incantation is the incantation of Marduk, the ÃÂà ¡ipu is the very image of Marduk." It describes the events (deaths, confusion and unhappiness) which have befallen the house and led to the selection of this ritual and then provides a lengthy list of figures and incantations. The text describes in detail how figurines should be formed and paintings drawn of the apkallus, "sages," and the invocation to make them incarnate. They are arranged in the sick personâÂÂs room, close to his bed:
It concludes with a lengthy prayer to the god Nusku, who is entreated to "expel the Demon, overcome Evil, and à  ulak, the nightly wanderer, whose touch is death."
The third tablet of the series is perhaps why the incantation series is considered significant as it includes the earliest extant list of the apkallus. These come in three forms – à «mu-, fish- and bird-apkallus, where the former may mean light and/or day and seem to be of human descent. In contrast to the other extant lists, there are eleven of these primordial beings, in two distinct groups, seven antediluvian and four postdiluvian:
At the end of the third tablet, the statues are discarded in the river and the drawings erased from the walls. The fourth tablet is fragmentary.