A man reported,

The Messenger of Allah ﷺ addressed us on the Day of Sacrifice while mounted on a red she-camel with a clipped ear, and he said, "This is the Day of Sacrifice, and this is the day of the greatest Hajj."

Azami 5247

Sahih

عن رجل من أصحاب النبي ﷺ قال

خطبنا رسول الله ﷺ يوم النحر على ناقة له حمراء مخضرمة، فقال: هذا يوم النحر، وهذا يوم الحج الأكبر.

الأعظمي 5247صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Hajj
Chapter
Description of the Hajj of the Prophet ﷺ as narrated by Jabir and others, and the rulings mentioned therein
Section
Hajj al-Akbar being the Day of Sacrifice
Numbering
Jami al-Kamil 5247 (2nd edition)
Azami 5247