Embracing Islam by the Persians in the Prophet (S.A.W.)'s era has not been taken into due consideration by the researchers of the history of Iran and Islam; whereas, the extant evidence indicates the appearance and existence of backgrounds for the Iranians' familiarity with Islam in that era. The present research aims at further clarifying the relationship between the Iranian and Islamic societies in the era of the Prophet (S.A.W.).
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