1712/1 - Ibn Mas‘ūd (may Allah be pleased with him) reported that the Prophet (may Allah’s peace and blessings be upon him) said: “He who takes an oath to acquire the property of a Muslim unjustly will meet Allah while He will be angry with him.” Then, he recited to us - in confirmation of this - a verse from the Book of Allah: {Those who trade the covenant of Allah and their oaths for a small price} [Surat Āl ‘Imrān: 77] till the end of the verse. [Narrated by Al-Bukhāri and Muslim]
1713/2 - Abu Umāmah Iyās ibn Tha‘labah al-Hārithi (may Allah be pleased with him) reported that the Prophet (may Allah’s peace and blessings be upon him) said: “Whoever seizes the right of a Muslim by taking a false oath, Allah will condemn him to Hellfire and forbid Paradise for him.” A man asked: “Even if it is something small, O Messenger of Allah?” He said: “Even if it is a tooth-stick.” [Narrated by Muslim]
1714/3 - ‘Abdullah ibn ‘Amr ibn al-‘Ās (may Allah be pleased with him and his father) reported that the Prophet (may Allah’s peace and blessings be upon him) said: “The major sins are: associating partners with Allah, undutifulness towards one’s parents, murder, and the intentional false oath.” [Narrated by Al-Bukhāri]
Another narration reads: “A Bedouin went to the Prophet (may Allah’s peace and blessings be upon him) and said: ‘O Messenger of Allah, what are the major sins?’ He said: ‘Associating partners with Allah.’ He asked: ‘Then what?’ He said: ‘The intentional false oath.’ He asked: ‘What is the intentional false oath?’ He said: ‘That by which the property of a Muslim is taken.’” In other words, a false oath by which a Muslim’s property is unjustly taken.
1) Affirming the gravity of the false oath that a person takes knowingly. It is a major sin that throws the swearer in Hellfire.
2) It is prohibited to take the property of others unjustly, no matter how small it is. Whoever does so incurs the wrath of Allah Almighty and becomes worthy of entering Hellfire.
3) A person should restrain his tongue and be truthful in his speech and oath.
4) The Shariah cares greatly about the rights of people, in terms of their lives, honor, wealth, and the like.