The meaning of Tenth deal in the Bible
(From Easton's Bible Dictionary)

i.e., the tenth part of an ephah (as in the RSV), equal to an omer or six pints. The recovered leper, to complete his purification, was required to bring a trespass, a sin, and a burnt offering, and to present a meal offering, a tenth deal or an omer of flour for each, with oil to make it into bread or cakes (Leviticus 14:10,21; Compare Exodus 16:36; 29:40).

See more on the meaning of Tenth Deal in the Bible:
Tenth Deal {International Standard Bible Encyclopedia}

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