The Prophet ﷺ said, "Time has come full circle, returning to the form it had on the day Allah created the heavens and the earth. The year is twelve months, four of which are sacred. Three are consecutive, Dhu al-Qadah, Dhu al-Hijjah, and Muharram, and Rajab of Mudar, which falls between Jumada and Shaban."Then he asked, "What month is this?"We replied, "Allah and His Messenger know best."He remained silent until we thought he would give it a different name. Then he said, "Is it not Dhu al-Hijjah?"We answered, "Yes."He asked, "What land is this?"We replied, "Allah and His Messenger know best."He remained silent until we thought he would give it a different name. Then he said, "Is it not the Sacred City?"We answered, "Yes."He asked, "What day is this?"We replied, "Allah and His Messenger know best."He remained silent until we thought he would give it a different name. Then he said, "Is it not the Day of Sacrifice?"We answered, "Yes, Messenger of Allah."He said, "Your blood and your property," Muhammad said, "and I think he also said, 'and your honor,'" "are sacred to you, as sacred as this day of yours, in this land of yours, in this month of yours. You will meet your Lord, and He will question you about your deeds. So do not return after me to disbelief or misguidance, striking each other's necks. Let those present convey this to those absent, for perhaps some of those to whom it is conveyed will retain it better than some who heard it directly."Then he said, "Have I not delivered the message?"
عن النبي ﷺ أنه قال: إن الزمان قد استدار كهيئته يوم خلق الله السموات والأرض، السنة اثنا عشر شهرا منها أربعة حرم، ثلاثة متواليات ذو القعدة، وذو الحجة، والمحرم، ورجب مضر الذي بين جمادى وشعبان ثم قال: أي شهر هذا؟ قلنا: الله ورسوله أعلم قال: فسكت حتى ظننا أنه سيسميه بغير اسمه، قال: أليس ذا الحجة؟ قلنا: بلى. قال: أي بلد هذا؟ قلنا: الله ورسوله أعلم. قال: فسكت حتى ظننا أنه سيسميه بغير اسمه، قال: أليس البلدة؟ قلنا: بلى قال: فأي يوم هذا؟ قلنا: الله ورسوله أعلم قال: فسكت حتى ظننا أنه سيسميه بغير اسمه، قال: أليس يوم النحر؟ قلنا: بلي يا رسول الله. قال: فإن دماءكم وأموالكم -قال محمد وأحسبه قال- وأعراضكم حرام عليكم كحرمة يومكم هذا في بلدكم هذا في شهركم هذا وستلقون ربكم فيسألكم عن أعمالكم فلا ترجعن بعدي كفارا أو ضلالا يضرب بعضكم رقاب بعض ألا ليبلغ الشاهد الغائب فلعل بعض من يبلغه يكون أوعى له من بعض من سمعه قال: ألا هل بلغت.
Bukhari related it in the Book of Sacrifices (5550), and Muslim in the Book of Retribution (29:1679), both through the route of Abdul-Wahhab Thaqafi, from Ayub, from Ibn Sirin, from Ibn Abu Bakra, from Abu Bakra, who narrated it.