Hadith 3248
Narrated Abu Hurairah: The Prophet ﷺ said: Do not swear by your fathers, or by your mothers, or by rivals to Allah; and swear by Allah only, and swear by Allah only when you are speaking the truth.
Hadith 3249
Narrated Ibn Umar: The Messenger of Allah ﷺ found Umar al-Khattab in a caravan while he was swearing by his father. So he said: Allah forbids you to swear by forefathers. If anyone swears, he must swear by Allah or keep silence.
Hadith 3250
The tradition mentioned above has also been transmitted by Ibn Umar through a different chain of narrators to the same effect up to the words "by your fathers". This version adds: " Umar said: I swear by Allah, I never swore by it personally or reporting it from others. "
Hadith 3251
Saeed ibn Ubaydah said: Ibn Umar heard a man swearing: No, I swear by the Kabah. Ibn Umar said to him: I heard the Messenger of Allah ﷺ say: He who swears by anyone but Allah is polytheist.
Hadith 3252
Referring to the story of a bedouin, Talhah bin Ubaid Allah reported the Prophet ﷺ as saying: He became successful, by his father, if he speaks the truth, he will enter paradise, by his father, if he speaks truth.