(26) بَابُ كَيْفَ يُسْتَحْلَفُ
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.)
Reference: Sahih al-Bukhari 2679
In-book reference: Book 52, Hadith 40
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 48, Hadith 844