"Tاmah" and its Development in the Administrative and Financial Organizations of Early Islam

As a jargon idiom, "tاmah" has had different meanings and senses in Muslim administrative and financial organizations during different historical periods. In Prophet Muhammad's lifetime, it meant to cede or assign specific shares of public land harvest to individuals. Next, during the era of the khilafah, it meant a kind of an allotment of real estates that actually granted the right to the revenues of a particular piece of government estate to other parties.
Using historical proofs and records, this paper discusses the meanings (in use) of the term "tاmah" in early Islam, in the Prophot's lifetime, and during the rule of the Rashidin (Guiding) Khalifahs and the reign of the Umayyad Dynasty.