It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Indeed Allah has made Makkah sacred. It was not made lawful for anyone before me, nor will it be made lawful for anyone after me. It was made lawful for me only for an hour of a day, then it is sacred by the sanctity of Allah as before: its trees are not to be cut, its game is not to be startled, and its grass is not to be uprooted." Sayyiduna Abbas (may Allah be pleased with him) said: Except the idhkhir? He (peace and blessings be upon him) said: "Except the idhkhir."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 11584