A Look into the Grágás: Medieval Icelandic Law.
On the Responsibility for Horses:
“When men put their horses into someone’s keeping at the General Assembly in accordance with the article of the law, the man who accepts a horse is not to use it for anything except for driving horses to where they are kept or from there to Þingvǫllr and for keeping paid watch on them, and he is not to ride any horse so much that it does not stay well filled out. At the close of the Assembly he is to show the owner his horse alive or dead, and the man who accepted it is not responsible for it unless it has died from his mishandling. If at the close of the Assembly he does not show the horse, neither alive nor dead, then at the close of the assembly the owner is to publish a suit, to be prosecuted the following summer, for payment for the horse against the man who accepted it.”
Source: Andrew Denis, Peter Foote, and Richard Perkins trans., Laws of Early Iceland: Grágás I (repr., 1980; Manitoba, Canada: University of Manitoba Press, 2012), 122.
Image: King Olaf Speaking at the Assembly, by Halfdan Egedius.