We saw the Messenger of Allah ﷺ addressing (the people) in the middle of the tashriq days when we were staying near his mount. This is the address of the Messenger of Allah ﷺ which he gave at Mina. (Using translation from Abū Dāʾūd 1952)   

عَنْ رَجُلَيْنِ مِنْ بَنِي بَكْرٍ قَالَا رَأَيْنَا رَسُولَ اللهِ ﷺ يَخْطُبُ بَيْنَ أَوْسَطِ أَيَّامِ التَّشْرِيقِ وَنَحْنُ عِنْدَ رَاحِلَتِهِ وَهِيَ خُطْبَةُ رَسُولِ اللهِ ﷺ الَّتِي خَطَبَ مِنًى  

[Machine] I heard the Messenger of Allah ﷺ say during the Farewell Pilgrimage, "Do you know which day is this?" They replied, "Allah and His Messenger know better." He said, "This is the day of the Raya (gathering)." They said, "Allah and His Messenger know better." He said, "This is one of the middle days of Tashriq (the three days following the Day of Sacrifice)." He then said, "Do you know which place is this?" They replied, "Allah and His Messenger know better." He said, "This is Al-Mash'ar Al-Haram (the Sacred Monument)." Then he said, "I do not know whether I will ever meet you at this place after this year. And I do know that your blood, your wealth, and your honor are as sacred to one another as the sacredness of this day of yours, in this month of yours, in this town of yours. Behold! Have I conveyed the message?" The people replied, "Yes." He then said, "O Allah, bear witness!" He repeated this action three times, then he passed away not long after reaching Madinah.  

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ فِي حَجَّةِ الْوَدَاعِ هَلْ تَدْرُونَ أِيُّ يَوْمٍ هَذَا؟ قَالَ وَهُوَ الْيَوْمُ الَّذِي يَدْعُونَ يَوْمَ الرُّءُوسِ قَالُوا اللهُ وَرَسُولُهُ أَعْلَمُ قَالَ هَذَا أَوْسَطُ أَيَّامِ التَّشْرِيقِ هَلْ تَدْرُونَ أِيَّ بَلَدٍ هَذَا؟ قَالُوا اللهُ وَرَسُولُهُ أَعْلَمُ قَالَ هَذَا الْمَشْعَرُ الْحَرَامُ ثُمَّ قَالَ إِنِّي لَا أَدْرِي لَعَلِّي لَا أَلْقَاكُمْ بَعْدَ هَذَا أَلَا وَإِنَّ دِمَاءَكُمْ وَأَمْوَالَكُمْ وَأَعْرَاضَكُمْ عَلَيْكُمْ حَرَامٌ كَحُرْمَةِ يَوْمِكُمْ هَذَا فِي بَلَدِكُمْ هَذَا حَتَّى تَلْقَوْا رَبَّكُمْ فَيَسْأَلَكُمْ عَنْ أَعْمَالِكُمْ أَلَا فَلْيُبَلِّغْ أَدْنَاكُمْ أَقْصَاكُمْ أَلَا هَلْ بَلَّغْتُ؟ فَلَمَّا قَدِمْنَا الْمَدِينَةَ لَمْ يَلْبَثْ إِلَّا قَلِيلًا حَتَّى مَاتَ ﷺ  

[Machine] This Surah was revealed when the help of Allah and the victory came to the Messenger of Allah ﷺ in the middle of the days of Tashriq. He knew that this was the farewell, so he ordered his camel, the Qaswa, to be prepared for him, and she was prepared for him. He rode on her and stopped at Al-Aqaba, and the people gathered. He said, "O people, he mentioned the speech in his sermon."  

أُنْزِلَتْ هَذِهِ السُّورَةُ إِذَا جَاءَ نَصْرُ اللهِ وَالْفَتْحُ عَلَى رَسُولِ اللهِ ﷺ فِي وَسَطِ أَيَّامِ التَّشْرِيقِ وَعَرَفَ أَنَّهُ الْوَدَاعُ فَأَمَرَ بِرَاحِلَتِهِ الْقَصْوَاءِ فَرُحِّلَتْ لَهُ فَرَكِبَ فَوَقَفَ بِالْعَقَبَةِ وَاجْتَمَعَ النَّاسُ فَقَالَ يَا أَيُّهَا النَّاسُ فَذَكَرَ الْحَدِيثَ فِي خُطْبَتِهِ