It was narrated that Ibn Abbas said:
"The Messenger of Allah said on the day of the conquest: 'Allah made this land sacred the day He created the Heavens and the Earth, so it is sacred by the Decree of Allah until the day of Resurrection. Its thorny shrubs are not to be cut, or its game disturbed, or its lost property to be picked up, except by the one who will announce it publicly, or is its green grass to be uprooted or cut.' Al-Abbas said: O Messenger of Allah! Except Ikhkhir.'" And he said something that meant: "Except Ikhkhir."
أَخْبَرَنَا مُحَمَّدُ بْنُ قُدَامَةَ، عَنْ جَرِيرٍ، عَنْ مَنْصُورٍ، عَنْ مُجَاهِدٍ، عَنْ طَاوُسٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَوْمَ الْفَتْحِ ‏"‏ هَذَا الْبَلَدُ حَرَّمَهُ اللَّهُ يَوْمَ خَلَقَ السَّمَوَاتِ وَالأَرْضَ فَهُوَ حَرَامٌ بِحُرْمَةِ اللَّهِ إِلَى يَوْمِ الْقِيَامَةِ لاَ يُعْضَدُ شَوْكُهُ وَلاَ يُنَفَّرُ صَيْدُهُ وَلاَ يَلْتَقِطُ لُقَطَتَهُ إِلاَّ مَنْ عَرَّفَهَا وَلاَ يُخْتَلَى خَلاَهُ ‏"‏ ‏.‏ قَالَ الْعَبَّاسُ يَا رَسُولَ اللَّهِ إِلاَّ الإِذْخِرَ ‏.‏ فَذَكَرَ كَلِمَةً مَعْنَاهَا ‏"‏ إِلاَّ الإِذْخِرَ ‏"‏ ‏.‏
GradeSahih (Darussalam)
Reference : Sunan an-Nasa'i 2874
In-book reference : Book 24, Hadith 0
English translation : Vol. 3, Book 24, Hadith 2877