 In "Sigrdrífumál", after the valkyrie Sigrdrífa is woken from her sleep curse by the hero Sigurd, Sigurd asks her name, and she gives him a "memory-drink" of a drinking horn full of mead, and then Sigrdrifa says a heathen prayer.The first verse of this prayer features a reference to the "sons of Dagr" and the "daughter of Nótt"