The Book of Oaths and Vows
كتاب الأيمان والنذور
Chapter 23: Idle Talk And Lies
"In Al-Madinah we used to buy and sell Wasqs (of goods), and we used to call ourselves Samasir (brokers), and the people used to call us like that. The Messenger of Allah came out to us one day, and called us by a name that was better than that which we called ourselves and which the people called us. He said: 'O Tujjar (traders), your selling involves (false) oaths and lies, so mix some charity with it.'"
Chapter 24: The Prohibition Against Vows
"They do not bring any good; they are just a means of taking wealth from the miserly."
"The Messenger of Allah forbade vows and said: 'They do not change anything; they are just a means of taking wealth from the miserly.'"
Chapter 25: A Vow Does Not Bring Anything Forward Nor Put It Back
"The Messenger of Allah said: 'A vow does not bring anything forward or put it back; it is just a means of taking wealth from the miserly.'"
"A vow does not bring anything to the son of Adam that has not been decreed for him. It is just a means of taking wealth from the miserly."
Chapter 26: A Vow Is A Means Of Taking Wealth From The Miserly
"Do not make vows, for a vow does not have any impact on the Qadar. Rather it is just a means of taking wealth from the miserly."
Chapter 27: Vows To Do Acts Of Worship
"Whoever vows to obey Allah, let him obey Him, and whoever vows to disobey Allah, let him not disobey Him."
Chapter 28: Vows To Commit Sin
"I heard the Messenger of Allah say: 'Whoever vows to obey Allah, let him obey Him, and whoever vows to disobey Allah, let him not disobey Him.'"
"I heard the Messenger of Allah say: 'Whoever vows to obey Allah, let him obey Him, and whoever vows to disobey Allah, let him not disobey Him.'"
Chapter 29: Fulfilling Vows
"The Messenger of Allah said: 'The best of you are my generation, then those who come after them, then those whom after them, then those who come after them.' -I do not know if he said two times after him or three. Then he mentioned some people who betray and cannot be trusted, who bear witness without being asked to do so, who make vows and do not fulfill them, and fatness will prevail among them."
Chapter 30: Vows Which Are Not Meant For The Face Of Allah
"The Messenger of Allah passed by a man who was leading another man by a rope. The Prophet took it, and cut it, and he said: 'It is a vow.'"
"The Prophet passed by a man who was circumambulating the Ka'bah, led by another man with a reign in his nose. The Prophet took him by the hand and commanded him to lead him by his hand." Ibn Juraij said: "Sulaiman told me that Tawus told him, from Ibn 'Abbas, that the Prophet passed by him when he was circumambulating the Ka'bah, and a man had tied his hand to another man with some string or thread or whatever. The Prophet cut it with his hand then said: 'Lead him with your hand.'"
Chapter 31: A Vow Concerning Something That One Does Not Own
"There is no vow to commit an act of disobedience, and no vow concerning that which the son of Adam does not possess."
"Whoever swears by a religion other than Islam, telling a lie, will be as he said, and whoever kills himself with something, he will be punished with it in the Hereafter, and there is no vow concerning that which a man does not possess."
Chapter 32: Whoever Vows To Walk To The House Of Allah
"My sister vowed to walk to the House of Allah, and she told me to ask the Messenger of Allah about that. So I asked the Prophet for her and he said: 'Let her walk, and let her ride.'"
Chapter 33: If A Woman Vows To Walk Barefoot And Bareheaded
"Tell her to cover her head and ride, and fast for three days."
Chapter 34: Whoever Vows To Fast Then Dies Before Fasting
"A woman traveled by sea and vowed to fast for a month, but she died before she could fast. Her sister came to the Prophet and told him about that, and he told her to fast on her behalf."
Chapter 35: If A Person Dies With A Vow Unfulfilled
"Fulfill it on her behalf."
"Sa'd bin 'Ubadah asked the Messenger of Allah about a vow which his mother had sworn, but she died before she could fulfill it. The Messenger of Allah said: 'Fulfill it on her behalf.'"
"Sa'd bin 'Ubadah came to the Prophet and said: 'My mother died and she had sworn a vow, but she did not fulfill it.' He said: 'Fulfill it on her behalf.'"