Volume 9, Book 92, Number 409:
Narrated ‘Asim:
I said to Anas, “Did Allah’s Apostle make Medina a sanctuary?” He replied, “Yes, (Medina is a sanc –
tuary from such-and-such place to such-and-such place. It is forbidden to cut its trees, and whoever
innovates an heresy in it or commits a sin therein, will incur the curse of Allah, the angels, and all
the people.” Then Musa bin Anas told me that Anas added, “….. or gives refuge to such an heretic or a
sinner…”