The Hyndluljóð (= 'Lay of Hyndla') is a lay from the Flateyjarbók (14th century).
Ottar has made a bet with Angantýr about genealogical knowledge. The giantess astride her wolf reluctantly follows Freyja, who is riding her boar Hildisvíni. Hyndla names Ottar's ancestors, and when finally Freyja urges her to give Ottar the memory potion, Hyndla begins to insult Freyja very much in the style of the Lokasenna. Only by threatening fire magic can Freyja finally manage to get the giantess to give Ottar the potion.