In Slavic mythology, Svarog (Polish: Swaróg, Cyrillic: Сварог, Sorbian: Schwayxtix) is the Slavic Sun Go and spirit of fire; his name means bright and clear. The name may be related to Sanskrit Svarga and Persian xwar (pron. Chvar) both meaning the same thing, indicating Indo-European etymological relation. So sacred was the fire that it was forbidden to shout or swear at it while it was being lit. Folklore portrays him as a fire serpent, a winged dragon that breathes fire. According to some interpretations the fire-god Svarogich was the son of Svarog. However, other sources refer to these names as one and the same god of fire.