- Ratatösk is the squirrel named,
- which has to run
- in Yggdrasil's ash;
- he from above
- the eagle's words must carry,
- and beneath to Nidhögg repeat.
Snorri Sturluson adds that the squirrel runs in both directions, bearing envious words between the eagle and the serpent.
- Grímnismál, 32.
- Gylfaginning, 16.