طَوِيلُ النِّجَادِ
The sword strap is long; this can imply tall stature.
The length of a sword strap is a literally possible feature, while its practical implication points to the wearer’s height. The constructed plain revision “tall” states the intended sense but forfeits the indirect image and its delicacy.
Kināyah characteristically leaves room for its literal meaning. In a clear explicit metaphor, a blocking indicator usually prevents the literal reading. This is the decisive contrast in the case.