Mishkat al-Masabih

Sa‘d reported God’s messenger as saying, “I declare sacred the territory between the two lava plains of Medina, so that its large thorn trees may not be cut down, or its game killed.” He also said, “Medina is best for them if they only knew. No one leaves it through dislike of it without God putting in it someone better than he in place of him, and no one will remain there in spite of its hardship and distress without my being an intercessor (or witness) on his behalf on the day of resurrection." Muslim transmitted it.