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Narrated Abdullah:

The Prophet ﷺ said, "Whoever has to take an oath should swear by Allah or remain silent." (i.e. He should not swear by other than Allah.)
حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا جُوَيْرِيَةُ، قَالَ ذَكَرَ نَافِعٌ عَنْ عَبْدِ اللَّهِ ـ رضى الله عنه ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ ‏
"‏ مَنْ كَانَ حَالِفًا فَلْيَحْلِفْ بِاللَّهِ أَوْ لِيَصْمُتْ ‏"‏‏.‏

Classification

Sahih (Authentic)

References

• Sahih al-Bukhari, 2679
• Sahih al-Bukhari, Vol. 3, Book of Witnesses, Hadith 844
• Sahih al-Bukhari, Book of Witnesses, Hadith 844