The placing of Idhkhir and grass in the grave

Narrated Ibn Abbas:

The Prophet ﷺ said, "Allah has made Mecca a sanctuary (sacred place) and it was a sanctuary before me and will be so after me. It was made legal for me (to fight in it) for a few hours of the day. None is allowed to uproot its thorny shrubs or to cut its trees or to chase its game or to pick up its fallen things except by a person who announces it publicly." On that Al-Abbas said (to the Prophet), "Except Al-Idhkhir for our goldsmiths and for our graves." And so the Prophet added, "Except Al-Idhkhir. " And Abu Huraira narrated that the Prophet ﷺ said, "Except Al-Idhkhir for our graves and houses." And Ibn Abbas said, "For their goldsmiths and houses."

حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ حَوْشَبٍ، حَدَّثَنَا عَبْدُ الْوَهَّابِ، حَدَّثَنَا خَالِدٌ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ عَنِ النَّبِيِّ ﷺ قَالَ " حَرَّمَ اللَّهُ مَكَّةَ، فَلَمْ تَحِلَّ لأَحَدٍ قَبْلِي وَلاَ لأَحَدٍ بَعْدِي، أُحِلَّتْ لِي سَاعَةً مِنْ نَهَارٍ، لاَ يُخْتَلَى خَلاَهَا، وَلاَ يُعْضَدُ شَجَرُهَا، وَلاَ يُنَفَّرُ صَيْدُهَا، وَلاَ تُلْتَقَطُ لُقَطَتُهَا إِلاَّ لِمُعَرِّفٍ ". فَقَالَ الْعَبَّاسُ ـ رضى الله عنه ـ إِلاَّ الإِذْخِرَ لِصَاغَتِنَا وَقُبُورِنَا. فَقَالَ " إِلاَّ الإِذْخِرَ ". وَقَالَ أَبُو هُرَيْرَةَ ـ رضى الله عنه ـ عَنِ النَّبِيِّ ﷺ " لِقُبُورِنَا وَبُيُوتِنَا ". وَقَالَ أَبَانُ بْنُ صَالِحٍ عَنِ الْحَسَنِ بْنِ مُسْلِمٍ، عَنْ صَفِيَّةَ بِنْتِ شَيْبَةَ، سَمِعْتُ النَّبِيَّ ﷺ مِثْلَهُ. وَقَالَ مُجَاهِدٌ عَنْ طَاوُسٍ عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ لِقَيْنِهِمْ وَبُيُوتِهِمْ.