Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Abu Umamah bin Tha’labah (may Allah be pleased with him), he says: I heard the Messenger of Allah (peace and blessings of Allah be upon him) say: “Whoever swears a false oath and thereby seizes the wealth of a Muslim, a black spot will be placed upon his heart which nothing will be able to change until the Day of Resurrection.”