In Norse mythology, the einherjar (Old Norse "single (or once) fighters") are those who have died in battle and are brought to Valhalla by valkyries. In Valhalla, the einherjar eat their fill of the nightly-resurrecting beast Sæhrímnir, and are brought their fill of mead (from the udder of the goat Heiðrún) by valkyries. The einherjar prepare daily for the events of Ragnarök, when they will advance for an immense battle at the field of Vígríðr; the battle which the "ein" (here meaning single-time) refers to. Heimdall occasionally returned the best of Einherjar to Midgard or Jotunheim with the purpose of killing giants, but they were forbidden to talk with the living.