It is narrated from Sayyiduna Abyad bin Hammal (may Allah be pleased with him) that he asked the Messenger of Allah (peace and blessings be upon him) for the salt mine called "Shadha", which was in Ma'rib, and he (peace and blessings be upon him) granted it to him. Then Sayyiduna al-Aqra' bin Habis al-Tamimi (may Allah be pleased with him) said: "O Prophet of Allah! I came to this salt place in the Jahiliyyah, and it lies in a land where whoever came to it would take (the salt); it is like flowing water." The narrator said: So the Prophet (peace and blessings be upon him) asked Sayyiduna Abyad bin Hammal (may Allah be pleased with him) to give back this land grant of his, and Abyad said: "I give it up on the condition that you make it a sadaqah on my behalf." The Messenger of Allah (peace and blessings be upon him) said: "It is a sadaqah on your behalf, and it is like flowing water; whoever reaches it may take from it." The narrator said: Then the Prophet (peace and blessings be upon him), in return for giving it up, granted him land and pasture in al-Jawf, the Jawf of Murad. And he asked the Messenger of Allah (peace and blessings be upon him) about protecting arak trees, and the Messenger of Allah (peace and blessings be upon him) said: "There is no protected area for arak trees." He said: "There is an arak tree within my enclosure." He (peace and blessings be upon him) said: "There is no protected area for arak." Faraj said: "By 'my enclosure', Abyad meant the land that had crops on it and was fenced around."
Hadith Referenceالمعجم الكبير للطبراني / باب الألف / 804