It is narrated from Sayyiduna Ka'b (may Allah be pleased with him) that the Prophet Muhammad (peace and blessings be upon him) said: "Whoever swears a false oath in order to seize the wealth of a Muslim will meet Allah while Allah is angry with him." The narrator said: O Messenger of Allah! Even if it is something insignificant? The Prophet (peace and blessings be upon him) said: "Even if it is a miswak from the arak tree."
Hadith Referenceالسنن المأثورة / باب ما جاء في فدية الأذى / 515
Hadith Takhrijصحیح مسلم الايمان، باب وعيد من اقتطع حق مسلم بيمين، رقم: 137