highlighted words differ between verses
قَيِّمًا لِّيُنذِرَ بَأْسًا شَدِيدًا مِّن لَّدُنْهُ وَيُبَشِّرَ ٱلْمُؤْمِنِينَ ٱلَّذِينَ يَعْمَلُونَ ٱلصَّـٰلِحَـٰتِ أَنَّ لَهُمْ أَجْرًا حَسَنًا
˹making it˺ perfectly upright, to warn ˹the disbelievers˺ of a severe torment from Him; to give good news to the believers—who do good—that they will have a fine reward,
إِنَّ هَـٰذَا ٱلْقُرْءَانَ يَهْدِى لِلَّتِى هِىَ أَقْوَمُ وَيُبَشِّرُ ٱلْمُؤْمِنِينَ ٱلَّذِينَ يَعْمَلُونَ ٱلصَّـٰلِحَـٰتِ أَنَّ لَهُمْ أَجْرًا كَبِيرًا
Surely this Quran guides to what is most upright, and gives good news to the believers—who do good—that they will have a mighty reward.
Both end with giving glad tidings to the believers but 17:9 uses 'yubashiru' (indicative) while 18:2 uses 'yubashira' (subjunctive) — a single vowel difference in the verb form.
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