A man swearing by other than Allah or by his father

Salim narrates from his father that the Prophet (peace and blessings be upon him) heard Sayyiduna Umar (may Allah be pleased with him) swearing by his father. He (peace and blessings be upon him) said: "Indeed, Allah Almighty has forbidden you from swearing by your forefathers." Sayyiduna Umar said: "By Allah, I have not sworn by forefathers (since then), neither on my own account nor quoting someone else."

Sayyiduna Ibn Umar (may Allah be pleased with them both) said: On one journey, the Prophet (peace and blessings be upon him) found Sayyiduna Umar swearing by his father. He (peace and blessings be upon him) said: "Allah Almighty has forbidden you from swearing by your forefathers. Whoever is to swear, let him swear by Allah or remain silent."

It is narrated from Sayyiduna Abd al-Rahman bin Samurah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Do not swear by your forefathers, nor by idols."

Sayyiduna Umar (may Allah be pleased with him) said: I was telling some people something, and then I said: "No, by my father." A man behind me said: "Do not swear by your forefathers." When I turned towards him, I saw that it was the Messenger of Allah (peace and blessings be upon him). He (peace and blessings be upon him) said: "If anyone were to swear by the Messiah, he would be ruined, even though the Messiah was better and more virtuous than your forefathers."

Sayyiduna Umar (may Allah be pleased with him) said: I swore by my father, and a man behind me said: "Do not swear by your forefathers." When I turned towards him, it was the Prophet (peace and blessings be upon him).

Sa'd bin Ubaydah said: We were with Sayyiduna Ibn Umar (may Allah be pleased with them both) in a circle (gathering). He heard a man swearing by his father, so he threw pebbles at him and said: "This used to be the oath of Umar, and the Prophet (peace and blessings be upon him) forbade him from it and said: 'It is shirk (associating partners with Allah).'"

It is narrated from al-Husayn bin Muhammad that the Prophet (peace and blessings be upon him) said: "Whoever swears by other than Allah, or by other than Islam, is not one of us."

Sayyiduna Abdullah (may Allah be pleased with him) said: That I should swear a false oath by Allah is dearer to me than that I should swear by other than Allah while being truthful.

Al-Hasan said: Sayyiduna Umar (may Allah be pleased with him) passed by Sayyiduna al-Zubayr (may Allah be pleased with him), who was swearing by the Ka'bah. Sayyiduna Umar raised his whip over him and said: "The Ka'bah! May you have no mother, does it feed you and give you drink?"

Ka'b said: Indeed, you people commit shirk. The people said: "O Abu Ishaq, how?" He said: "People swear: 'By my father,' 'By your father,' 'By my life,' 'By your life,' 'By the sanctity of the mosque,' 'By Islam,' and other oaths like these (and all this is shirk)."

Al-Hasan said: I found people in such a state that if a man mounted his riding animal (and travelled) until he wore it out, (he would do so) before he would hear anyone swearing by other than Allah. (That is, swearing by other than Allah was that rarely heard among them.)

Al-Qasim said: Do not swear by your forefathers, nor by the taghut (false deities).

Al-Qasim bin Mukhaymirah said: I do not care whether I swear by the life of some person or swear by the cross (there is no difference between the two).

Ibrahim disliked that a person should swear by (someone's) life.

Maymun said: Indeed, Allah Almighty swears by whatever He wills of His creation, and it is not permissible for anyone to swear by other than Allah; and whoever swears by Allah, let him not swear falsely.

Umm Bakr bint al-Miswar said: Sayyiduna al-Miswar (may Allah be pleased with him) heard his son saying: "I have associated partners with Allah," or "I have disbelieved in Allah." He struck him and said: "Say 'Astaghfirullah' (I seek Allah's forgiveness) and say 'Amantu billah' (I believe in Allah)." He said this three times.

Mus'ab bin Sa'd narrates from his father that he said: I swore by al-Lat and al-Uzza. I came to the Prophet (peace and blessings be upon him) and said: "I have sworn by al-Lat and al-Uzza." He (peace and blessings be upon him) said: "Say 'La ilaha illallah' (there is no god but Allah) three times, spit lightly to your left three times, seek refuge with Allah from Satan, and then do not say it again."