Narrated `Aisha: Abu Bakr As-Siddiq had never broken his oaths till Allah revealed the expiation for the oaths. Then he said, "If I take an oath to do something and later on I find something else better than the first one, then I do what is better and make expiation for my oath."

Allah's Messenger (ﷺ) also said: "By Allah, if anyone of you insists on fulfilling an oath by which he may harm his family, he commits a greater sin in Allah's sight than that of dissolving his oath and making expiation for it."

Narrated Ibn `Umar: Allah's Messenger (ﷺ) met `Umar bin Al-Khattab while the latter was going with a group of camel-riders, and he was swearing by his father. The Prophet (ﷺ) said, "Lo! Allah forbids you to swear by your fathers, so whoever has to take an oath, he should swear by Allah or keep quiet."

Narrated Ibn `Umar: I heard `Umar saying, "Allah's Messenger (ﷺ) said to me, 'Allah forbids you to swear by your fathers." `Umar said, "By Allah! Since I heard that from the Prophet (ﷺ) , I have not taken such an oath, neither intentionally, nor by reporting the oath of someone else."

Narrated `Abdullah bin `Umar: Allah's Messenger (ﷺ) said, "Do not swear by your fathers."

Narrated Zahdam: There was a relation of love and brotherhood between this tribe of Jarm and Al-Ash`ariyin. Once we were with Abu Musa Al-Ash`ari, and then a meal containing chicken was brought to Abu Musa, and there was present, a man from the tribe of Taimillah who was of red complexion as if he were from non-Arab freed slaves. Abu Musa invited him to the meal. He said, "I have seen chickens eating dirty things, so I deemed it filthy and took an oath that I would never eat chicken." On that, Abu Musa said, "Get up, I will narrate to you about that. Once a group of the Ash`ariyin and I went to Allah's Messenger (ﷺ) and asked him to provide us with mounts; he said, 'By Allah, I will never give you any mounts nor do I have anything to mount you on.' Then a few camels of war booty were brought to Allah's Messenger (ﷺ) , and he asked about us, saying, 'Where are the Ash-'ariyin?' He then ordered five nice camels to be given to us, and when we had departed, we said, 'What have we done? Allah's Messenger (ﷺ) had taken the oath not to give us any mounts, and that he had nothing to mount us on, and later he gave us that we might ride? Did we take advantage of the fact that Allah's Messenger (ﷺ) had forgotten his oath? By Allah, we will never succeed.' So we went back to him and said to him, 'We came to you to give us mounts, and you took an oath that you would not give us any mounts and that you had nothing to mount us on.' On that he said, 'I did not provide you with mounts, but Allah did. By Allah, if I take an oath to do something, and then find something else better than it, I do that which is better and make expiation for the dissolution of the oath.' "

Narrated Abu Huraira: The Prophet (ﷺ) said, "Whoever swears saying in his oath. 'By Al-Lat and Al-`Uzza,' should say, 'None has the right to be worshipped but Allah; and whoever says to his friend, 'Come, let me gamble with you,' should give something in charity."

Narrated Ibn `Umar: Allah's Messenger (ﷺ) had a gold ring made for himself, and he used to wear it with the stone towards the inner part of his hand. Consequently, the people had similar rings made for themselves. Afterwards the Prophet; sat on the pulpit and took it off, saying, "I used to wear this ring and keep its stone towards the palm of my hand." He then threw it away and said, "By Allah, I will never wear it." Therefore all the people threw away their rings as well.

Narrated Al-Bara: The Prophet (ﷺ) ordered us to help others to fulfill the oaths.

Narrated Abu Huraira: Allah's Messenger (ﷺ) said, "Any Muslim who has lost three of his children will not be touched by the Fire except that which will render Allah's oath fulfilled."

Narrated Haritha bin Wahb: I heard the Prophet (ﷺ) saying, "Shall I tell you of the people of Paradise? They comprise every poor humble person, and if he swears by Allah to do something, Allah will fulfill it; while the people of the fire comprise every violent, cruel arrogant person."

Narrated Abu Huraira: The Prophet (ﷺ) said, "If somebody eats something forgetfully while he is fasting, then he should complete his fast, for Allah has made him eat and drink."

Narrated `Abdullah bin `Amr: The Prophet (ﷺ) said, "The biggest sins are: To join others in worship with Allah; to be undutiful to one's parents; to kill somebody unlawfully; and to take an oath Al-Ghamus.

Narrated Al-Musaiyab: When the death of Abu Talib approached, Allah's Messenger (ﷺ) came to him and said, "Say: La ilaha illallah, a word with which I will be able to defend you before Allah."

Narrated Abu Hazim: Sahl bin Sa`d said, "Abu Usaid, the companion of the Prophet, got married, so he invited the Prophet (ﷺ) to his wedding party, and the bride herself served them. Sahl said to the People, 'Do you know what drink she served him with? She infused some dates in a pot at night and the next morning she served him with the infusion."

Narrated Sa`id bin Al-Harith: that he heard Ibn `Umar saying, "Weren't people forbidden to make vows?" The Prophet (ﷺ) said, 'A vow neither hastens nor delays anything, but by the making of vows, some of the wealth of a miser is taken out."

Narrated `Aisha: The Prophet (ﷺ) said, "Whoever vows that he will be obedient to Allah, should remain obedient to Him; and whoever made a vow that he will disobey Allah, should not disobey Him."

Narrated `Aisha: The Prophet (ﷺ) said, "Whoever vowed to be obedient to Allah, must be obedient to Him; and whoever vowed to be disobedient to Allah, should not be disobedient to Him."

Narrated Ibn `Abbas: While performing the Tawaf around the Ka`ba, the Prophet (ﷺ) passed by a person leading another person by a hair-rope nose-ring in his nose. The Prophet (ﷺ) cut the hair-rope nose-ring off with his hand and ordered the man to lead him by the hand.

Narrated `Abdullah bin `Umar: that he was asked about a man who had vowed that he would fast all the days of his life then the day of `Id al Adha or `Id-al-Fitr came. `Abdullah bin `Umar said: You have indeed a good example in Allah's Messenger. He did not fast on the day of `Id al Adha or the day of `Id-al-Fitr, and we do not intend fasting on these two days.