"When the Prophet (ﷺ) took an oath he would say: 'By the One in Whose Hand is the soul of Muhammad."'

"The swearing of the Messenger of Allah (ﷺ) when he took an oath and I bear witness before Allah was: 'By the One in Whose Hand is my soul."'

"The swearing most frequently sworn by the Messenger of Allah (ﷺ) was: 'No, by the Controller of the hearts."'

"The swearing of the Messenger of Allah (ﷺ) was: 'No, and I ask Allah for forgiveness."'

the Messenger of Allah (ﷺ) heard him swearing by his father. The Messenger of Allah (ﷺ) said: 'Allah forbids you from making oaths by your forefathers." 'Umar said: I never took an oath by them (i.e., my forefathers) myself nor narrating such words from anyone else.”

the Messenger of Allah (ﷺ) said: 'Do not take oaths by idols nor by your forefathers. "

the Messenger of Allah (ﷺ) said: "Whoever takes an oath, and swears, saying: 'By Al-Lat and Al-Uzza,' let him say:'La ilaha illallah.' "

"I took an oath by Lat and 'Uzza. The Messenger of Allah (ﷺ) said : 'Say: "La ilaha illallah wahdahu la sharika lahu" (None has the right to be worshipped but Allah alone, with no partner or associate)," then spit toward your left three times, and seek refuge with Allah, and do not do that again."'

The Messenger of Allah (ﷺ) said: 'Whoever takes an oath to follow a religion other than Islam, telling a deliberate lie, he will be as he said.'"

"If that happens, I will be a Jew." The Messenger of Allah (ﷺ) said: 'That is guaranteed."

the Messenger of Allah (ﷺ) said: "Whoever says: 'I have nothing to do with Islam,' if he is lying then he is as he said, and if he is telling the truth, his Islam will not be sound."

"The Messenger of Allah (ﷺ) heard a man taking an oath by his father and said: 'Do not make oaths by your forefathers. Whoever makes an oath by Allah, let him fulfill his oath, and if an oath is sworn for a person by Allah, let him accept it. Whoever is not content with Allah has nothing to do with Allah.'

"Eisa bin Maryam saw a man stealing and said: 'Did you steal?' He said: 'No, by the One besides Whom there is no other God.' 'Eisa said: 'I believe in Allah, and I do not believe what my eyes see.'"

the Messenger of Allah (ﷺ) said: "An oath (leads to) either sin or regret. "

'Whoever swears an oath and says In sha' Allah, he will have made an exception."(2)

"Whoever swears an oath and says In sha' Allah, if he wishes he may go ahead and if he wishes he may not, without having broken his oath."

"Whoever swears an oath and says In sha' Allah, will never break his oath."

"I came to the Messenger of Allah (ﷺ) with a group of Asharites and asked him to give us animals to ride. He said: 'By Allah, I cannot give you anything to ride, and I have nothing to give you to ride.' We stayed as long as Allah willed, then some camels were brought to him. He ordered that we be given three she-camels with fine humps. When we left, we said to one another: 'We came to the Messenger of Allah (ﷺ) to ask him for animals to ride, and he swore by Allah that he would not give us anything to ride, then he gave us something. Let us go back.' So we went to him and we said: 'O Messenger of Allah! We came to you seeking mounts, and you took an oath that you would not give us mounts, then you gave us some mounts.' He said: 'By Allah, I did not give you animals to ride, rather Allah gave you them to ride. I, by Allah, if Allah wills, do not swear and then see something better than it, but I offer expiation for what I swore about, and do that which is better.' Or he said: 'I do that which is better and offer expiation for what I swore about.'"

the Messenger of Allah (ﷺ), said: "Whoever swears an oath then sees that something else is better than it, let him do that which is better and offer expiation for what he swore about. "