Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates from the Messenger of Allah (peace and blessings be upon him) that on the day of the Conquest of Makkah he (peace and blessings be upon him) said: "There is no hijrah (emigration), but there is jihad and intention; and when you are called out to go forth, then go forth." And on the day of the Conquest of Makkah the Messenger of Allah (peace and blessings be upon him) said: "Allah made this city sacred on the day He created the heavens and the earth, so it is sacred by the sanctity of Allah until the Day of Resurrection. Its fresh grass is not to be cut, its thorny trees are not to be cut down, its game is not to be startled, and its lost property is not to be picked up except by one who announces it."
Sayyiduna Abbas (may Allah be pleased with him) said: O Messenger of Allah (peace and blessings be upon him)! Except idhkhir, for it is for their smiths and their houses. He (peace and blessings be upon him) said: "Except idhkhir."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9944