كتاب الحج
15
The Book of Pilgrimage
(82)
Chapter: The sanctity of Makkah and the sanctity of its game, grasses, trees and lost property, except for the one who announces it, is forever
(82)
باب تَحْرِيمِ مَكَّةَ وَصَيْدِهَا وَخَلاَهَا وَشَجَرِهَا وَلُقَطَتِهَا إِلاَّ لِمُنْشِدٍ عَلَى الدَّوَام

Ibn 'Abbas (Allah be pleased with him) reported Allah's Messenger (ﷺ) as saying on the Day of Victory over Mecca:

There is no Hijra (emigration) but only Jihad and good intention; and when you are called to battle, then go forth. He also said on the Day of Victory over Mecca: Allah made this town sacred on the day He created the earth and the heavens; so it is -sacred by the sacred- ness conferred on it by Allah until the Day of Resurrection and fighting in it was not lawful to anyone before me, and it was made lawful for me only during an hour on one day, for it is sacred by the sacredness conferred on it by Allah until the Day of Resurrection. Its thorns are not to be cut, its game is not to be molested, and the things dropped are to be picked up only by one who makes a public announcement of it, and its fresh herbage is not to be cut. Abbas (Allah be pleased with him) said: Messenger of Allah, exception may be made in case of rush, for it is useful for their blacksmiths and for their houses. He (the Holy Prophet) conceding the suggestion of 'Abbas) said: Except rush.
حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ الْحَنْظَلِيُّ، أَخْبَرَنَا جَرِيرٌ، عَنْ مَنْصُورٍ، عَنْ مُجَاهِدٍ، عَنْ طَاوُسٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَوْمَ الْفَتْحِ فَتْحِ مَكَّةَ ‏"‏ لاَ هِجْرَةَ وَلَكِنْ جِهَادٌ وَنِيَّةٌ وَإِذَا اسْتُنْفِرْتُمْ فَانْفِرُوا ‏"‏ ‏.‏ وَقَالَ يَوْمَ الْفَتْحِ فَتْحِ مَكَّةَ ‏"‏ إِنَّ هَذَا الْبَلَدَ حَرَّمَهُ اللَّهُ يَوْمَ خَلَقَ السَّمَوَاتِ وَالأَرْضَ فَهُوَ حَرَامٌ بِحُرْمَةِ اللَّهِ إِلَى يَوْمِ الْقِيَامَةِ وَإِنَّهُ لَمْ يَحِلَّ الْقِتَالُ فِيهِ لأَحَدٍ قَبْلِي وَلَمْ يَحِلَّ لِي إِلاَّ سَاعَةً مِنْ نَهَارٍ فَهُوَ حَرَامٌ بِحُرْمَةِ اللَّهِ إِلَى يَوْمِ الْقِيَامَةِ لاَ يُعْضَدُ شَوْكُهُ وَلاَ يُنَفَّرُ صَيْدُهُ وَلاَ يَلْتَقِطُ إِلاَّ مَنْ عَرَّفَهَا وَلاَ يُخْتَلَى خَلاَهَا ‏"‏ ‏.‏ فَقَالَ الْعَبَّاسُ يَا رَسُولَ اللَّهِ إِلاَّ الإِذْخِرَ فَإِنَّهُ لِقَيْنِهِمْ وَلِبُيُوتِهِمْ ‏.‏ فَقَالَ ‏"‏ إِلاَّ الإِذْخِرَ ‏"‏ ‏.‏
Reference : Sahih Muslim 1353 a
In-book reference : Book 15, Hadith 506
USC-MSA web (English) reference : Book 7, Hadith 3139
  (deprecated numbering scheme)