Sayyiduna Awfa bin Mawalah al-Anazi (may Allah be pleased with him) said: "I came to the Prophet (peace and blessings be upon him), and he (peace and blessings be upon him) granted me the land of al-Ghamim, and he placed a condition on me that the wayfarer would be the first to drink. He granted a man from among us, Sa'idah, a well in the desert called al-Ja'uniyyah, a well in which water was stored, though it was not sweet water. He granted Iyas bin Qatadah al-Anazi al-Jabiyah, which lies before al-Yamamah. We had all come to him together, and he (peace and blessings be upon him) wrote this down on leather for each one of us."
Hadith Referenceالمعجم الكبير للطبراني / باب الألف / 857