Narrated Ibn Umar (RA):
The Prophet's oath (ﷺ) used to be: "No, by Him Who turns (changes) the hearts."[Reported by al-Bukhari]. (RU)
Reference (RU): Bulugh al-Maram 1379 (RU)
In-book reference (RU): Book 13, Hadith 6 (RU)
English translation (RU): Book 13, Hadith 1379 (RU)