It is narrated from Sayyiduna Rafi' bin Khadij (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Whoever cultivates the land of a people without their permission will get nothing of the produce, but his expenses will be returned to him."
Hadith Referenceالمعجم الكبير للطبراني / باب الراء / 4422