Sahih Muslim | Book 7 | Hadith Number 3153

Narrated by Jabir (Allah be pleased with him)
Jabir (Allah be pleased with him) reported Allah's Apostle (may peace be upon him) as saying: Ibrahim declared Mecca as sacred; I declare Medina, that between the two mountains, as inviolable. No tree should be lopped and no game is to be molested.