Apologies, but I need the text you'd like translated into Arabic. Please paste the passage from "5.6 The Challenge of the Qur'an" (or the section you want translated), and I'll translate it following the rules you've set.
5.6 The Challenge of the Qur’an
كما ثبت بالعقل وجود خالق، كذلك يجب التحقق من أن أولئك الذين يدّعون النبوة وأنهم مبعوثون بالهداية من الخالق، هم كذلك حقًّا. وحتى في هذه المسألة، لا ينبغي أن يكون هناك مجال للإيمان الأعمى أو للاعتقاد القائم على العاطفة.
Just as it is rationally proved that there is a creator, so it must be verified that those who claim to be prophets and bringers of guidance from the creator, are indeed so. Even in this issue, there should be no room for blind faith or emotional belief.
كلُّ نبيٍّ أرسله اللهُ عزَّ وجلَّ جاء بتحدٍّ للناس دليلًا على صحة نبوته. فمثلًا جاء موسى عليه السلام بعصًا تحوّلت إلى ثعبان حين أُلقيت على الأرض، وأُعطي عيسى عليه السلام القدرةَ، بإذن الله عزَّ وجلَّ، على إحياء الموتى. وهذه الأفعال تخالف سنن الكون، وهي فوق قدرة أي إنسان، أو أي شيء آخر، إلا قدرة من خلق الكون ووضع هذه السنن التي تحكمه. وبذلك ثبت لقومهم أنهم مُرسَلون من عند الله عزَّ وجلَّ.
Every prophet sent by Allah (swt) came with a challenge to mankind as a verification of his prophethood. For example, Moses (as) came with a staff that turned into a snake when it was thrown to the floor, and Jesus (as) was given the ability, by the permission of Allah (swt), to bring back the dead to life. These types of actions defy the laws of the universe, and are beyond the capability of any human being, or indeed anything, except for the one who created the universe and placed these very laws which govern it. Thus, it was proved about them to their people that indeed they were sent from Allah (swt).
لكن بالنسبة لنا اليوم، قد تُعدّ هذه مجرد قصص من الماضي. ولكي يكون لدينا يقين حقيقي، نحتاج أن نرى مثل هذا التحدي بأنفسنا. والحق أن مثل هذا البرهان موجود اليوم، وهو في القرآن الكريم. يقول الله سبحانه وتعالى:
However, for us today, these may be considered as mere stories from the past. To have real conviction, we need to see such a challenge for ourselves. Indeed, such a proof exists today, and it is found in the Holy Qur’an. Allah (swt) says,.
﴿وَإِن كُنتُمْ فِي رَيْبٍ مِّمَّا نَزَّلْنَا عَلَىٰ عَبْدِنَا فَأْتُوا بِسُورَةٍ مِّن مِّثْلِهِ وَادْعُوا شُهَدَاءَكُم مِّن دُونِ اللَّهِ إِن كُنتُمْ صَادِقِينَ﴾ ... [تفسیر طبری ] ؟ Wait, I need to correct that: the Qur'an text here should be given in its own format, and the reference is TMQ 2:23 (Tafsir/Translation of the Meanings of the Qur'an, Surah Al-Baqarah 2:23). Here is the translation: ﴿وَإِن كُنتُمْ فِي رَيْبٍ مِّمَّا نَزَّلْنَا عَلَىٰ عَبْدِنَا فَأْتُوا بِسُورَةٍ مِّن مِّثْلِهِ وَادْعُوا شُهَدَاءَكُم مِّن دُونِ اللَّهِ إِن كُنتُمْ صَادِقِينَ﴾ [البقرة: ٢٣]
“And if you are in doubt concerning that which We have sent down to Our slave (Muhammad), then produce a surah (chapter) of the like thereof and call your witnesses besides Allah, if you are truthful.” [TMQ 2:23].
فَيَتَّضِحُ بِذَلِكَ التَّحَدِّي، وَتَظْهَرُ صِحَّةُ الْقُرْآنِ بِوَصْفِهِ كِتَابَ وَحْيٍ وَهِدَايَةٍ مِنَ الْخَالِقِ؛ إِذْ لَوْ كَانَ قَدْ كَتَبَهُ إِنْسَانٌ، لَاسْتَطَاعَ غَيْرُهُ مِنَ الْبَشَرِ أَنْ يُحَاكِيَ أُسْلُوبَهُ، وَلَوْ فِي طُولِ أَقْصَرِ سُورَةٍ، وَهِيَ سُورَةُ الْكَوْثَرِ الَّتِي لَا تَتَجَاوَزُ ثَلَاثَةَ أَسْطُرٍ. وَمَعَ ذَلِكَ، فَمُنْذُ نُزُولِ الْقُرْآنِ قَبْلَ أَكْثَرَ مِنْ أَلْفٍ وَأَرْبَعِمِائَةِ سَنَةٍ حَتَّى يَوْمِنَا هَذَا، لَمْ يَأْتِ أَحَدٌ عَلَى وَجْهِ الْأَرْضِ بِسُورَةٍ مِثْلِهِ. وَإِنَّهُ لَكِتَابُ اللهِ سُبْحَانَهُ وَتَعَالَى.
Thus, the challenge is made plain - the validity of the Qur’an as a book of revelation and guidance from the Creator is apparent. For if a human being had written it, then certainly other human beings would be able to imitate its style - even in the length of the shortest surah (‘al- Kawthar’, which is only three lines long). However, from the time of the revelation of the Qur’an, over 1400 years ago, until today, no one on the face of the earth has produced a chapter of its like. Indeed, it is the Book of Allah (swt).