Hadith #3251Oaths and Vows (Kitab Al-Aiman Wa Al-Nudhur) · Narrated by Isma'il bin Ja'far bin Abi Kathir إسماعيل بن جعفر بن أبي كثير الأنصاري, Malik bin Abi 'Amir مالك بن أبي عامر الأصبحي, Nafi' bin Malik bin Abi 'Amir نافع بن مالك بن أبي عامر الأصبحي, Sulaiman bin Da'ud bin Da'ud سليمان بن داود بن داود بن علي · Sahih
Ibn Umar heard a man swearing: No, I swear by the Ka’bah. Ibn Umar said to him: I heard the Messenger of Allah (ﷺ) say: He who swears by anyone but Allah is polytheist.