The Messenger of Allah ﷺ halted on the day of sacrifice between the jamrahs (pillars at Mina) during hajj which he performed. He asked: Which is this day? They replied: This is the day of sacrifice. He said: This is the day of greater hajj.  

أَنَّ رَسُولَ اللَّهِ ﷺ وَقَفَ يَوْمَ النَّحْرِ بَيْنَ الْجَمَرَاتِ فِي الْحَجَّةِ الَّتِي حَجَّ فَقَالَ أَىُّ يَوْمٍ هَذَا قَالُوا يَوْمُ النَّحْرِ قَالَ هَذَا يَوْمُ الْحَجِّ الأَكْبَرِ  

Abu Bakr sent me among those who proclaim at Mina that no polytheist should perform Hajj after this year and no naked person should go round the House (the Ka'bah), and that the day of greater Hajj is the day of sacrifice, and the greater Hajj is the Hajj.  

بَعَثَنِي أَبُو بَكْرٍ فِيمَنْ يُؤَذِّنُ يَوْمَ النَّحْرِ بِمِنًى أَنْ لاَ يَحُجَّ بَعْدَ الْعَامِ مُشْرِكٌ وَلاَ يَطُوفَ بِالْبَيْتِ عُرْيَانٌ وَيَوْمُ الْحَجِّ الأَكْبَرِ يَوْمُ النَّحْرِ وَالْحَجُّ الأَكْبَرُ الْحَجُّ