The following examples share one analytical procedure:
Yā maẓlūm: vocative form, inducement, because the addressee already voices a grievance.
Raḥimahu Allāh: past-tense declarative form, prayer, because the utterance is intended as a blessing.
Taʾtīnī ghadan: indicative imperfect form, request, where the speaker is inviting the addressee to come tomorrow.
A reliable reading joins grammatical construction, context and intended force. Neither form-only interpretation nor arbitrary attribution of hidden meanings is sound rhetorical analysis.