It wasnarrated that Safiyyah bint Shaibah said:
"I heard the Prophet(ﷺ) delivering a sermon in the Year of the Conquest (of Makkah),and he said: 'O people, Allah made Makkah sacred the day He createdthe heavens and the earth, and it is sacred until the Day ofResurrection. Its trees are not to be cut, its game is not to bedisturbed, and its lost property is not to be taken except by one whowill announce it.''Abbas said: 'Except for Idhkhir (a kind of fragrant grass), for it is (used) for houses and graves.' The messenger of Allah (ﷺ) said: 'Except for Idhkhir.'"
English reference: Vol. 4, Book 25, Hadith 3109
Arabic reference: Book 25, Hadith 3228