Analysis of information sources in references of the Wikipedia article "Mahmud al-Kashgari" in Indonesian language version.
The most elegant of the dialects belongs to those who know only one language, who do not mix with Persians and who do not customarily settle in other lands. Those who have two languages and who mix with the populace of the cities have a certain slurring in their utterances.... The most elegant is that of the Khagani kings and those who associate with them.