According to Avestan sources, Afrasiab was killed by Haoma near the Čīčhast (possibly either referring to Lake Hamun in Sistan or some unknown lake in today's Central Asia), and according to Shahnameh he met his death in a cave known as the Hang-e Afrasiab, or the dying place of Afrasiab, on a mountaintop in Azerbaijan.
The name "Ghor" is a cognate to Avestan gairi-, Sanskrit giri- and Middle Persian gar, in modern Persian koh-, Sogdian gor-/gur-, in later developed Bactrian language as g´wrao- (also paravata), meaning "mountain", in modern Pashto as ghar-, in Pamir languages as gar- and ghalcca- ("mountain").
The Indo-European root for this is reconstructed as *eǵHom, which is preserved in Sanskrit as aham and in Avestan Persian as azam.
This word belongs to the Avestan language from the old Indo-Iranian language group, which was used to write the Gathas in Kurdish Gwet, meaning "spoken" or "the spoken words".
The name "Mordad" derives from Middle Persian "Amurdad" from Avestan 'Ameretat', the Zoroastrian divinity of "immortality", and under whose protection the month stands.
In his study of treatment of hair and nails among the Indo-Europeans, Bruce Lincoln compares Snorri's Prose Edda comments about nail disposal to an Avestan text, where Ahura Mazdā warns that daevas and xrafstras will spring from hair and nails that lay without correct burial, noting their conceptual similarities.
Goshtasb's brother Zareh (Zareh/Zarer etc., Avestan Zairivairi) is sent to fetch him, but Goshtasb flees to "Rum" (Roman/Byzantine territories) where he marries daughter of the Roman king, becomes a military commander for the emperor, and encourages the emperor to demand tribute from Iran.