The oldest writing of the name is dNin-NAĜAR.BU, attested in the god lists from Abu Salabikh and Fara and in the Zame Hymns from the Early Dynastic period, though later on dNin-IGI.NAĜAR.BU was employed.
[2] While the name is commonly rendered as Ninildu in Assyriological literature, the alternate reading Ninduluma has been proposed based on an unpublished incantation from Meturan, which reportedly uses a phonetic spelling.
"[7] An incantation states that Ninildu was one of the deities created by Ea with clay from the Apsu,[8] and that he was tasked with the construction of temples alongside Ninsimug and Arazu.
[11] In the third millennium BCE Ninildu is also attested in the names of two individuals from Adab and in a list of offerings from the Old Akkadian period which might have originated in the same city.
[12] A text from the reign of Nabu-apla-iddina describing the preparation of a new statue of Shamash mentions Ninildu among the deities aiding Ea in the process, alongside Kusigbanda, Ninkurra and Ninzadim.