When God’s messenger came to Medina Abu Bakr and Bilal were prostrated with fever and when I went to God’s messenger and told him he said, "O God, make Medina as dear to us as Mecca, or more so, make it healthy, bless us in its sa' and its mudd, and transfer its fever and put it in al-Juhfa."
‘Amir b. Sa'd said that Sa‘d rode to his castle in al-'Aqiq and found a salve cutting down trees, or beating off their leaves, so he took what was on him. When Sa'd returned, the slave’s people came to him and asked him to return to their servant or to them what he had taken from their servant, but he replied, "God forbid that I should return anything which God’s messenger has given me as spoil;" and he refused to return it to them.
'Abdallah b. ‘Umar told of the vision the Prophet had about Medina. He said, “I saw a black woman with dishevelled hair go out of Medina and settle at Mahya'a, and interpreted it as meaning that the pestilence of Medina had been transferred to Mahya'a, which is al-Juhfa.”
Abu Sa'id reported the Prophet as saying, "Abraham declared Mecca sacred and made it a sacred area, and I declare Medina to be sacred throughout the area between its two mountain paths, so that no blood may be shed in it, weapons may not be carried in it for fighting, and leaves may not be beaten off trees in it except for fodder."