Adi bin Adi narrates from his father (may Allah be pleased with him) that he said: Two men came to the Prophet (peace and blessings be upon him) with a dispute over land. One said: It is mine. The other said: It is mine, because it is in my possession. He (peace and blessings be upon him) said: "The oath is upon the one in whose possession the land is." When he got ready to swear the oath, the Messenger of Allah (peace and blessings be upon him) said: "Whoever swears an oath to seize the wealth of a Muslim will meet Allah while Allah is angry with him." He (peace and blessings be upon him) said: "Whoever gives it up, Paradise is for him."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الدعوى والبينات / 21211