The Chronicle of The Kings of Norway
Part 16 - Of King Harald
When Harald came to Novgorod King Jarisleif received him in the most friendly way and he remained there all winter (A.D. 1045). Then he took into his own keeping all the gold and the many kinds of precious things which he had sent there from Constantinople and which together made up so vast a treasure that no man in the Northern lands ever saw the like of it in one man's possession.
Harald had been three times in the poluta-svarf while he was in Constantinople. It is the custom, namely, there, that every time one of the Greek emperors dies, the Varings are allowed poluta-svarf; that is, they may go through all the emperor's palaces where his treasures are and each may take and keep what he can lay hold of while he is going through them.