Sayyiduna Hudhayfah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "Do not say: 'It happened (or will happen) as Allah wills and so-and-so wills,' but rather say: 'It happened (or happens or will happen) as Allah wills and then so-and-so wills.'"

It is narrated from Sayyiduna Sahl bin Hunaif (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said to him: "I am sending you as my envoy to the people of Makkah. Convey my greetings to them and inform them that the Messenger of Allah (peace and blessings be upon him) commands you with three things: ① Do not swear by your forefathers (and according to another narration, by anything other than Allah), ② When you relieve yourselves, do not face the Qiblah nor turn your back to it, and ③ Do not use bones or dung for istinja (purification after relieving oneself)."

Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates: A man came to the Messenger of Allah (peace and blessings be upon him) and said: I saw a dream at night; I saw that there was a canopy, from which ghee and honey were dripping. I saw that people were collecting it in buckets, some taking more and some less. There was a rope that reached from the earth to the sky. I saw you holding it and ascending, then another man held it and he also ascended, then a third man held it and he too ascended, then a man held it but the rope broke, then it was joined again.

Sayyiduna Abu Bakr (may Allah be pleased with him) said: O Messenger of Allah! May my parents be sacrificed for you, allow me to interpret it. The Prophet (peace and blessings be upon him) said: "(Alright) you interpret it." Sayyiduna Abu Bakr (may Allah be pleased with him) said: The canopy is Islam, and the honey and ghee dripping from it refers to the sweetness of the Qur'an. So, some people learn more of the Qur'an and some less, and the rope reaching from the sky to the earth is the truth upon which you stand. Allah, the Exalted, will raise you high through it. Then a man will hold it, and he too will be elevated with it, then another man will hold it and he will be elevated with it, then a third man will hold it, and it will break. Then it will be joined, and then he will be elevated with it. O Messenger of Allah! May my parents be sacrificed for you, tell me, is the interpretation I have given correct or incorrect?

The Prophet (peace and blessings be upon him) said: "You have interpreted some parts correctly and made a mistake in some parts." Sayyiduna Abu Bakr (may Allah be pleased with him) said: By Allah! You must tell me where I made a mistake. The Prophet (peace and blessings be upon him) said: "Abu Bakr! Do not swear an oath."

Sayyiduna Abdullah bin Umar (may Allah be pleased with them) says that I heard the Messenger of Allah (peace and blessings be upon him) say: "Swearing an oath by anyone other than Allah is shirk (associating partners with Allah)."

Ibn Buraidah narrates from his father, who says: The Messenger of Allah (peace and blessings be upon him) said: "Whoever swears by trust is not one of us."

Sayyiduna Abdullah bin Umar (may Allah be pleased with them) narrates that the Noble Prophet (peace and blessings of Allah be upon him) said: "Swear by Allah, fulfill it, and speak the truth, for Allah dislikes swearing by other than Him."

A woman from the tribe of Juhaina, Sayyida Qateela bint Saifi (may Allah be pleased with both of them), says: A Jewish scholar came to the Prophet Muhammad (peace and blessings be upon him) and said: "You people commit shirk; you say: (It happens) as Allah wills and as you will. And you also say: By the Ka'bah." The Messenger of Allah (peace and blessings be upon him) said: "You should say: (It happens) as Allah wills and then as you will, and when taking an oath, say: By the Lord of the Ka'bah."

Abdullah bin Buraidah narrates from his father, who says that the Messenger of Allah (peace and blessings be upon him) said: "Whoever swears an oath of trust is not one of us, and whoever corrupts a man’s wife or servant against him is also not one of us."

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "A false oath may sell the goods, but it wipes out the earnings." And in another narration, the words are: "It wipes out the blessing."

It is narrated from Sayyiduna Abu Umamah bin Tha'labah (may Allah be pleased with him), he says: I heard the Messenger of Allah (peace and blessings of Allah be upon him) say: "Whoever seizes the wealth of a Muslim by means of a false oath, a black spot is placed upon his heart, which nothing can erase until the Day of Resurrection."