When a prophet or people are mentioned in multiple sūrahs, compare the immediate audience and communicative purpose. One passage may teach endurance, another argue for divine unity, another warn, and another console believers. Recurrence may teach a new dimension rather than merely repeat information.
Qur’anic iʿjāz concerns distinctive style, rich and forceful meaning, and the work’s discussion of historical and future reports. Rhyme or repeated narrative on its own does not exhaust this subject.
A useful comparison identifies the audience and main purpose of each passage before analyzing variation in wording, order, or conclusion. Such variation is interpreted in relation to meaning, not detached from it.