تَرَافَعَا شَيْئًا
Translation: Two people lifted one thing together.
ElementAnalysisImplication
تَرَافَعَاPast, third-person masculine dualTwo doers
Dual alifSubject pronounEncodes their number
شَيْئًاAccusative objectOne thing being lifted
Despite the dual verbal ending, the object is singular. The number of actors does not prove repetition of the action. This exemplifies the book's distinction between the issuing and the occurrence of the act.