صحیح مسلم · Hadith 4385

Abu Bakra reported that when it was that day (the 10th of Dhu'l-Hijja) he mounted his camel and a person caught its nosestring, whereupon he said: Do you know which day is this? They said: Allah and His Messenger know best. (The Prophet [may peace be upon him] kept silent) until we thought that he would give that another name. He said: Is it not the day of Nahr (Sacrifice) (10th of Dhu'l- Hijja)? We said: Allah's Messenger, yes. He (again) said: Which month is it? We said: Allah and His Messenger knows best. He said: Is it not Dhu'l-Hijja? We said: Allah's Messenger, yes. He said: Which city is this? We said: Allah and His Messenger know best. He (the narrator) said (that the Prophet kept silent until we thought that he would give it another name besides its (original) name. He said: Is it not Balda (the city of Mecca)? We said: Yes, Allah's Messenger. He (then) said: Verily your blood (lives) and your property and your honour are as sacred unto you as sacred is this day of yours, in this month of yours, in this city of yours. Let him who is present convey it to one who is absent. He then turned his attention towards two multicoloured (black and white) rams and slaughtered them, and two goats, and distributed them amongst us.