Narrated Ibn 'Umar (RA): Allah's Messenger ( صلی اللہ علیہ وسلم ) overtook 'Umar bin al-Khattab when he was with a party of riders of about ten and 'Umar was swearing by his father. Allah's Messenger ( صلی اللہ علیہ وسلم ) called them and said, "Verily! Allah forbids you from swearing by your fathers. Therefore, if anyone swears, he must swear by Allah or keep silent." [Agreed upon] In a narration which is Marfu' (attributed to the Prophet) reported by Abu Dawud and an-Nasa'i from Abu Hurairah (RA) it has: "Do not swear by your fathers, nor by your mothers, nor by the rivals (set up as equals with Allah); and do not swear by Allah except when you are speaking the truth."

Narrated Abu Hurairah (RA): Allah's Messenger ( صلی اللہ علیہ وسلم ) said: "Your oath will be about that matter which your adversary has required you to swear about so that he will believe you." In another narration: "An oath is to be interpreted according to the intention of the one who requested it (Al-Mustahlif)." [Muslim reported both narrations] .

Narrated 'Abdur-Rahman bin Samura (RA): Allah's Messenger ( صلی اللہ علیہ وسلم ) said: "When you swear an oath and then consider something else to be better than it, make atonement for your oath and do the thing that is better." [Agreed upon] . A wording of al-Bukhari has: "Do the thing that is better and make atonement for your oath." In a narration by Abu Dawud: "Make atonement for your oath, then do the thing that is better." [The chains of narrators of both Ahadith are Sahih (authentic)] .

Narrated Ibn 'Umar (RA): "Allah's Messenger ( صلی اللہ علیہ وسلم ) said: "Whoever swears an oath, and then says: "If Allah Wills", he is not held accountable if he breaks it." [Ahmad and al-Arba'a reported it, and Ibn Hibban graded it Sahih (authentic)] .

Narrated Ibn Umar (RA): The Prophet's oath ( صلی اللہ علیہ وسلم ) used to be: "No, by Him Who turns (changes) the hearts." [Reported by al-Bukhari] .

Narrated 'Abdullah bin 'Amr (RA): A desert Arab came to the Prophet ( صلی اللہ علیہ وسلم ) and said, "O Allah's Messenger, what are the major sins?" The narrator reported the Hadith and it contains: "The false oath." It contains also: I asked, "What is the false oath?" The Prophet ( صلی اللہ علیہ وسلم ) replied, "It is that (oath) by which one takes possession of the property of a Muslim person, while he is lying." [al-Bukhari reported it] .

Narrated 'Aishah (RA) regarding the saying of Allah the Most High: "Allah will not punish you for what is unintentional in your oaths (5:89)." She said: It (was sent down about such phrases as) a person's sayying: 'No, by Allah' and 'Yes, by Allah.' [al-Bukhari reported it (Mauquf, i.e. as a saying of 'Aishah). Abu Dawud reported it as Marfu' (attributed to the Prophet).]

Narrated Abu Hurairah (RA): Allah's Messenger ( صلی اللہ علیہ وسلم ) said: "Verily! Allah has ninety-nine Names concerning which he who retains them in his memory will enter Paradise." [Agreed upon] . at-Tirmidhi and Ibn Hibban listed the Names. However, investigations show that their listing is Idraj (an insertion) from one of the narrators [not from the words of the Prophet] .

Narrated Usama bin Zaid (RA): Allah's Messenger ( صلی اللہ علیہ وسلم ) said. "If one is done a kindness and [expresses his gratitude] to his benefactor by saying 'May Allah give you a good reward', he has fully expressed his appreciation." [at-Tirmidhi reported it, and Ibn Hibban graded it Sahih (authentic)] .

Narrated Ibn 'Umar (RA): The Prophet ( صلی اللہ علیہ وسلم ) forbade making vows, and said, "It does not bring good. Indeed, it is only a means by which something is extracted from the miserly." [Agreed upon] .