Tafsir of Surah Ar-Ra'd 13:31
﴿وَلَوْ أَنَّ قُرْآنًا سُيِّرَتْ بِهِ الْجِبَالُ أَوْ قُطِّعَتْ بِهِ الْأَرْضُ أَوْ كُلِّمَ بِهِ الْمَوْتَىٰ بَل لِّلَّهِ الْأَمْرُ جَمِيعًا أَفَلَمْ يَيْأَسِ الَّذِينَ آمَنُوا أَن لَّوْ يَشَاءُ اللَّهُ لَهَدَى النَّاسَ جَمِيعًا وَلَا يَزَالُ الَّذِينَ كَفَرُوا تُصِيبُهُم بِمَا صَنَعُوا قَارِعَةٌ أَوْ تَحُلُّ قَرِيبًا مِّن دَارِهِمْ حَتَّىٰ يَأْتِيَ وَعْدُ اللَّهِ إِنَّ اللَّهَ لَا يُخْلِفُ الْمِيعَادَ﴾
Translation of the meaning
And if there was any Qur’ān [i.e., recitation] by which the mountains would be removed or the earth would be broken apart or the dead would be made to speak, [it would be this Qur’ān], but to Allāh belongs the affair entirely. Then have those who believed not accepted that had Allāh willed, He would have guided the people, all of them? And those who disbelieve do not cease to be struck, for what they have done, by calamity - or it will descend near their home - until there comes the promise of Allāh. Indeed, Allāh does not fail in [His] promise.
English Translation - Noor International Center — v1.1.2 · QuranEnc.comThe words of the two imams are given in their original Arabic, verbatim, with references.
Shaykh al-Islam Ibn Taymiyyah
وتارة يحذفه كما يحذف جواب لو كثيرا كقوله تعالى: {لو تعلمون علم اليقين} وقوله: {ولو أن قرآنا سيرت به الجبال}«مجموع الفتاوى» 13/315Imam Ibn al-Qayyim
ومثل هذا حذفه من أحسن الكلام لأن المراد أنك لو رأيت ذلك لرأيت هولا عظيما فليس في ذكر الجواب زيادة على ما دل عليه الشرط«التبيان في أقسام القرآن» 1/2