That Ibn 'Umar heard a man saying: "No by the Ka'bah" so Ibn 'Umar said: "Nothing is sworn by other than Allah, for I heard the Messenger of Allah (ﷺ) say: 'Whoever swears by other than Allah, he has committed disbelief or shirk.'"
Reference: Jami` at-Tirmidhi 1535 In-book : Book 20, Hadith 13 English translation : Vol. 3, Book 18, Hadith 1535
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