Hadith of Virtues of Persia People

Hadith of virtues of Persia People ( ) refers to a sayaing of Islamic prophet about people of Persia.
Merit
The merit is considered to be one of the three words of Iman (faith), Din (Religion) and Ilm (knowledge) based on the narrations.
Context
This hadith has been narrated by different hadith books some of which are as follows.
* Bukhari's Sahih
Right after this tradition is the following hadith:
Next hadith in this collection is as such
Terminology
Ath-Thuraiya
This word is the only word used in most of the narrations and is not omitted due to diversity of the narrations. It is thought this word is used as exaggerated expression of the remoteness.
Persia
The meaning of Persia may be easy understandable for the people living in the current era, but to investigate the narration we'd better see what meanings may be derived from the word Persia.
* Farsi speakers:
Some of the scholars believe that, the word Persia does not point to a special place but it means the people whose mother tongue is Farsi.
* East of the Arabian Peninsula:
Some of the scholars believe that, due to its historical application by the Arabs, Persia absolutely means the east of the Arabian Peninsula.
* Shiraz and its surrounding<ref name="Maarif" />