According to C.E. Boseworth[20]:
“ In early Islamic times Persians tended to identify all the lands to the northeast of Khorasan and lying beyond the Oxus with the region of Turan, which in the Shahnama of Ferdowsi is regarded as the land allotted to Fereydun's son Tur. The denizens of Turan were held to include the Turks, in the first four centuries of Islam essentially those nomadizing beyond the Jax¬artes, and behind them the Chinese (see Kowalski; Minorsky, “Turan”). Turan thus became both an ethnic and a geographical term, but always containing ambiguities and contradictions, arising from the fact that all through Islamic times the lands immediately beyond the Oxus and along its lower reaches were the homes not of Turks but of Iranian peoples, such as the Sogdians and Khwarezmians.

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