Fasaha of discourse requires individually acceptable words combined without weak composition, word disharmony or taʿqid.
Weak composition concerns syntax. Word disharmony arises in articulation across words. Verbal taʿqid is obscurity caused by arrangement; semantic taʿqid is an unnecessarily remote interpretive transition.
Repetition and serial idafa must be evaluated by purpose, context and actual burden. Continue to assess the word, syntax, pronunciation and intended sense distinctly.
Next comes fasaha of the speaker and then the larger discussion of balagha.