(12) باب مَا جَاءَ كَيْفَ كَانَ يَمِينُ النَّبِيِّ صلى الله عليه وسلم
Narrated Salim bin 'Abdullah:
From this father (Ibn Umar) who said: "The Messenger of Allah (ﷺ) often would swear with this oath: 'No! By the Changer of the Hearts.'" (ID)
Reference (ID): Jami` at-Tirmidhi 1540 (ID)
In-book reference (ID): Book 20, Hadith 19 (ID)
English translation (ID): Vol. 3, Book 18, Hadith 1540 (ID)