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كتاب التفسير
65  
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
(13)
The Statement of Allah Jt: "Thus We have made of you [true Muslims— real believers of Islamic Monotheism, true followers of Prophet Muhammad jR and his Sunna (legal ways)], a just (and the best) nation, that you may be witnesses over mankind, and the Messenger (Muhammad ) will be a witness over you..." (V.2:143)
(13)
Sahih al-Bukhari 4487

Narrated Abu Sa`id Al-Khudri:

Allah's Messenger (ﷺ) said, "Noah will be called on the Day of Resurrection and he will say, 'Labbaik and Sa`daik, O my Lord!' Allah will say, 'Did you convey the Message?' Noah will say, 'Yes.' His nation will then be asked, 'Did he convey the Message to you?' They will say, 'No Warner came to us.' Then Allah will say (to Noah), 'Who will bear witness in your favor?' He will say, 'Muhammad and his followers. So they (i.e. Muslims) will testify that he conveyed the Message. And the Apostle (Muhammad) will be a witness over yourselves, and that is what is meant by the Statement of Allah "Thus We have made of you a just and the best nation that you may be witnesses over mankind and the Apostle (Muhammad) will be a witness over yourselves." (2.143)

حَدَّثَنَا يُوسُفُ بْنُ رَاشِدٍ، حَدَّثَنَا جَرِيرٌ، وَأَبُو أُسَامَةَ ـ وَاللَّفْظُ لِجَرِيرٍ ـ عَنِ الأَعْمَشِ، عَنْ أَبِي صَالِحٍ، وَقَالَ أَبُو أُسَامَةَ، حَدَّثَنَا أَبُو صَالِحٍ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ يُدْعَى نُوحٌ يَوْمَ الْقِيَامَةِ فَيَقُولُ لَبَّيْكَ وَسَعْدَيْكَ يَا رَبِّ‏.‏ فَيَقُولُ هَلْ بَلَّغْتَ فَيَقُولُ نَعَمْ‏.‏ فَيُقَالُ لأُمَّتِهِ هَلْ بَلَّغَكُمْ فَيَقُولُونَ مَا أَتَانَا مِنْ نَذِيرٍ‏.‏ فَيَقُولُ مَنْ يَشْهَدُ لَكَ فَيَقُولُ مُحَمَّدٌ وَأُمَّتُهُ‏.‏ فَتَشْهَدُونَ أَنَّهُ قَدْ بَلَّغَ ‏"‏‏.‏ ‏{‏وَيَكُونَ الرَّسُولُ عَلَيْكُمْ شَهِيدًا‏}‏ فَذَلِكَ قَوْلُهُ جَلَّ ذِكْرُهُ ‏{‏وَكَذَلِكَ جَعَلْنَاكُمْ أُمَّةً وَسَطًا لِتَكُونُوا شُهَدَاءَ عَلَى النَّاسِ وَيَكُونَ الرَّسُولُ عَلَيْكُمْ شَهِيدًا‏}‏ وَالْوَسَطُ الْعَدْلُ‏.‏
Reference : Sahih al-Bukhari 4487
In-book reference : Book 65, Hadith 14
USC-MSA web (English) reference : Vol. 6, Book 60, Hadith 14
  (deprecated numbering scheme)