Heimskringla Bait of Geri

It was written above that Jarl Sigvaldi had joined company with King
Óláfr in Vinðland. And the jarl had ten ships, plus an eleventh on which
were the men of Ástríðr, king (Búrizláfr)’s daughter and Jarl Sigvaldi’s
wife. And when King Óláfr had leapt overboard, then the whole army
shouted a shout of victory, and then they struck their oars into the sea, the
jarl and his men, and rowed towards the battle. Halldórr ókristni speaks of
this:

165. Voyaged far the vessels
of Vinðr to the fight; thin-bladed
ogres of land of Óðinn
yawned iron-jawed over people.
Swords’ uproar was heard on the ocean.
The eagle tore bait of Geri.*
He struck, the men’s great commander.
Many men went fleeing

But the cruiser of Vinðr that Ástríðr’s men were on rowed away and back
off Vinðland, and there was already a report by many people that King
Óláfr must have thrown off his coat of mail in the water and dived away
from under the longships, afterwards swimming to the Vinðr’s cruiser, and
that Ástríðr’s men had taken him ashore. And there have been many stories
made since about these travels of King Óláfr’s by some people...


- Heimskringla, Óláfs saga Tryggvasonar, Chapter 112


("Gera beita: ‘bait, food of Geri (one of Óðinn’s wolves)’, carrion." - Footnote included with translation)