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.  

عَنْ رَجُلَيْنِ مِنْ بَنِي بَكْرٍ قَالاَ رَأَيْنَا رَسُولَ اللَّهِ ﷺ يَخْطُبُ بَيْنَ أَوْسَطِ أَيَّامِ التَّشْرِيقِ وَنَحْنُ عِنْدَ رَاحِلَتِهِ وَهِيَ خُطْبَةُ رَسُولِ اللَّهِ ﷺ الَّتِي خَطَبَ بِمِنًى  

She was mistress of a temple in pre-Islamic days. She said: The prophet ﷺ addressed us on the second day of sacrifice (yawm ar-ru'us) and said: Which is this day? We said: Allah and His Apostle are better aware. He said: Is this not the middle of the tashriq days?  

خَطَبَنَا رَسُولُ اللَّهِ ﷺ يَوْمَ الرُّءُوسِ فَقَالَ أَىُّ يَوْمٍ هَذَا قُلْنَا اللَّهُ وَرَسُولُهُ أَعْلَمُ قَالَ أَلَيْسَ أَوْسَطَ أَيَّامِ التَّشْرِيقِ