مُزَارَعَةٌ

is of the measure مُفَاعَلَةٌ, [denoting a mutual action,] from الزِّرَاعَةُ, (Mgh,) and its signification is well known; (S;) i. e. (tropical:) The making a contract, or bargain, with another, for labour upon land, [to till and sow and cultivate it, as is indicated in the Mgh and Msb,] for a share, or portion, of its produce, (Msb, K, TA,) the seed being from the owner of the land. (K, TA.) [You say, زَارَعَهُ (tropical:) He made with him a contract, or bargain, such as is above described; and in like manner, خَابَرَهُ, and اكَرَهُ. The doing this is forbidden, because of the uncertainty of the result.]