Abu Hurairah reported,

The tribe of Khuza killed a man from the tribe of Banu Layth in the year of the conquest of Mecca, in retaliation for one of their own whom the Layth had killed. The Prophet ﷺ was informed of this, so he mounted his camel and delivered a sermon, saying, "Allah has held back from Mecca the killing," or he said "the elephant," (Abu Abdullah was uncertain), "and He has given His Messenger ﷺ and the believers authority over it. It was never lawful for anyone before me, and it will never be lawful for anyone after me. It was made lawful for me only for a single hour of one day, and at this very hour of mine it has returned to being sacred. Its thorny shrubs are not to be cut, its trees are not to be chopped down, and its lost property is not to be picked up except by one who will announce it publicly. Whoever has someone killed has the choice of two options, either to accept blood-money, or to demand retaliation from the family of the slain."Then a man from Yemen came forward and said, "Write it down for me, Messenger of Allah."The Prophet ﷺ said, "Write it down for Abu so-and-so."A man from Quraysh said, "Except for the idhkhir grass, Messenger of Allah, for we use it in our houses and our graves."The Prophet ﷺ said, "Except for the idhkhir, except for the idhkhir."

عن أبي هريرة

أن خزاعة قتلوا رجلا من بني ليث- عام فتح مكة- بقتيل منهم قتلوه، فأخبر بذلك النبي ﷺ، فركب راحلته فخطب، فقال: إن الله حبس عن مكة القتل- أو الفيل شك أبو عبد الله،- وسلط عليهم رسول الله ﷺ والمؤمنين، ألا وإنها لم تحل لأحد قبلي، ولم تحل لأحد بعدي، ألا وإنها حلت لى ساعة من نهار، ألا وإنها ساعتي هذه حرام، لا يختلى شوكها، ولا يعضد شجرها، ولا تلتقط ساقطتها إلا لمنشد، فمن قتل فهو بخير النظرين: إما أن يعقل، وإما أن يقاد أهل القتيل. فجاء رجل من أهل اليمن، فقال: اكتب لي يا رسول الله فقال: اكتبوا لأبي فلان. فقال رجل من قريش: إلا الإذخر يا رسول الله؛ فإنا نجعله في بيوتنا وقبورنا؟ فقال النبي ﷺ: إلا الإذخر، إلا الإذخر.