The Messenger of Allah ﷺ said during the Farewell Pilgrimage, "Tell me, which month do you know to be the most sacred?"They replied, "This month of ours."He asked, "Which land do you know to be the most sacred?"They replied, "This land of ours."He asked, "Which day do you know to be the most sacred?"They replied, "This day of ours."He said, "Allah has made your blood, your property, and your honor sacred to one another, except by right, just as sacred as this day of yours, in this land of yours, in this month of yours. Have I conveyed the message?" He said this three times, and each time they answered, "Yes, indeed."Then he said, "Woe to you, do not return after me as disbelievers, striking the necks of one another."
قال رسول الله ﷺ في حجة الوداع: ألا أي شهر تعلمونه أعظم حرمة؟ قالوا: ألا شهرنا هذا قال: ألا أي بلد تعلمونه أعظم حرمة؟ قالوا: ألا بلدنا هذا. قال: ألا أي يوم تعلمونه أعظم حرمة؟ قالوا: ألا يومنا هذا. قال: فإن الله تبارك وتعالى قد حرم عليكم دماءكم وأموالكم وأعراضكم- إلا بحقها- كحرمة يومكم هذا، في بلدكم هذا، في شهركم هذا، ألا هل بلغت (ثلاثا)؟ كل ذلك يجيبونه: ألا نعم. قال: ويحكم- أو ويلكم- لا ترجعن كفارا بعدي، يضرب بعضكم رقاب بعض.
Bukhari narrated it in the Book of Hudud (6785), and Muslim in the Book of Iman (66), both through the route of Waqid bin Muhammad, from his father, from Ibn Umar, who related it. The wording given is that of Bukhari, while Muslim's wording is abridged.