The Prophet (ﷺ) confided to me a secret which I did not disclose to anybody after him. And Um Sulaim asked me (about that secret) but I did not tell her.
Sahih al-Bukhari Book 79, Hadith 61
← Previous Hadith the Prophet (ﷺ) said "When three persons are together, then no two of them should hold secret counsel excluding the third person."

Sahih al-Bukhari Book 79, Hadith 60 Next Hadith → The Prophet (ﷺ) said, "When you are three persons sitting together, then no two of you should hold secret counsel excluding the third person until you are with some other people too, for that would grieve him."

Sahih al-Bukhari Book 79, Hadith 62