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