The oldest attestations of Ninnibru have been dated to the
Ur III period. She is absent from earlier god lists (such as the
Fara and
Abu Salabikh lists) and other sources from the
Early Dynastic or
Old Akkadian periods. She is also absent from the
Old Babylonian Nippur god list, which according to Manuel Ceccarelli might indicate its compilers adhered to the view that Ninurta's spouse is to be identified as one of the Mesopotamian medicine goddesses instead. In the Ur III period, Ninnibru sporadically occurs in sources from Nippur itself, as well as in a large number of offering lists from
Puzrish-Dagan focused on Nippurian deities. One mentions her alongside
Ninurta before the pairs
Nuska and
Sadarnunna and Lugalgusisu and
Memešaga. She was worshiped alongside Ninurta in the temple Ešumeša. She also had her own temple in Nippur, though in a
metrological text attesting its existence it is not provided with a distinct ceremonial name. In the
Kassite period a temple dedicated to her was also built in
Dur-Kurigalzu alongside those of
Enlil,
Ninlil and Ninurta, but its ceremonial name is similarly unknown. Ninnibru is attested in a single offering list from the archives of the
First Dynasty of Sealand, where she appears after Enlil, Ninlil, Ninurta and Nuska. She also appears in a hymn from this
text corpus, according to which
Ninmena was responsible for taking care of her, though this description is considered to be unusual, as a connection between the latter goddess and Nippur mentioned in this text is not otherwise known to researchers. While it was considered uncertain in the past if Ninnibru was still worshiped during the reign of the Kassite dynasty, according to Joan Goodnick Westenholz she is attested in prayers and seal inscriptions documenting the popular religion of this period. Two inscriptions from Nippur are dedicated to her, while a third contemporary one comes from an unknown location. Due to being absorbed by Gula, Ninnibru eventually ceased to be mentioned as a distinct deity. A late reference to her occurs in a hymn to
Nanaya written in first person, in which the latter identifies herself with various city goddesses, which was presumably meant to exalt her position in the Mesopotamian pantheon. ==References==