From Sahih Bukhari (Hadith 2433):
Narrated Ibn 'Abbas (ra):Allah's Messenger (ﷺ) also said, "It (i.e., Makkah's) thorny bushes should not be uprooted and its game should not be chased, and picking up its fallen things is illegal except by him who makes public announcement about it, and its grass should not be cut." 'Abbas said, "O Allah's Messenger ! Except Idhkhir (a kind of grass)." The Prophet (ﷺ) said, "Except Idhkhir
Reference: Bukhari 2433