Sayyiduna Tha'labah (may Allah be pleased with him) narrated that the Prophet (peace and blessings be upon him) said: "Whoever seizes a man's right by a false oath, it will become a black spot of sirsal in his heart, which nothing will change until the Day of Resurrection."
Al-Tabarani recorded it; its chain contains Ubaydullah bin Tha'labah al-Ansari, whom I do not know; the rest of its narrators are thiqat (trustworthy).