It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that two men brought a dispute to the Prophet (peace and blessings be upon him). The Prophet (peace and blessings be upon him) asked the claimant for witnesses, but he had no witnesses. Therefore, the Prophet (peace and blessings be upon him) demanded an oath from the defendant. He swore an oath, saying: "By Allah, besides whom there is no deity." The Prophet (peace and blessings be upon him) said: "You have indeed sworn an oath, but due to the sincerity in your saying of «لَا إِلٰهَ ِإلَّا اللّٰهُ» , all your sins have been forgiven."