(1) باب النَّهْىِ عَنِ الْحَلِفِ بِغَيْرِ اللَّهِ تَعَالَى
'Umar b. al-Khattib reported Allah's Messenger (ﷺ) as saying:
Allah, the Great and Majestic, forbids you to swear by your fathers. Umar said: By Allah. I have never sworn (by my father) since I heard Allah's Messenger (ﷺ) forbidding it mentioning them" on my behalf" nor on behalf of someone else. (ID)
Reference (ID): Sahih Muslim 1646 a (ID)
In-book reference (ID): Book 27, Hadith 1 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Book 15, Hadith 4035 (ID)