Hypatian Codex
Dazhbog (or Dazhboh) is mentioned in the Primary Chronicle, a history of early Kievan Rus' as one of seven gods whose statues Prince Vladimir the Great erected in front of his palace in Kiev in 980, when he came to the throne. The name is also mentioned in the Hypatian Codex, as well as in the medieval Old East Slavic epic "The Tale of Igor's Campaign".