If I were to see deer grazing in Medina, I would have never molested them, for Allah's Messenger (ﷺ) has stated: There is between the two lava mountains a sacred territory.
Sahih Muslim Book 15, Hadith 536
← Previous Hadith " The protection granted by Muslims is one and must be respected by the humblest of them. And he who broke the covenant made by a Muslim, there is a curse of Allah, of his angels, and of the whole people upon him, and neither an obligatory act nor a supererogatory act would be accepted from him as recompense on the Day of Resurrection."

Sahih Muslim Book 15, Hadith 535 Next Hadith → If I were to find deer in the territory between the two mountains, I would not molest them, and he (the Holy Prophet) declared twelve miles of suburb around Medina as a prohibited pasture.

Sahih Muslim Book 15, Hadith 537