Jami at-Tirmidhi 1540
Jami at-Tirmidhi · Book 20: The Book on Vows and Oaths · What Has Been Related About How The Prophet (saws) Would Swear
Narrated Salim bin 'Abdullah:
حَدَّثَنَا عَلِيُّ بْنُ حُجْرٍ ، أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ الْمُبَارَكِ ، وَعَبْدُ اللَّهِ بْنُ جَعْفَرٍ ، عَنْ مُوسَى بْنِ عُقْبَةَ ، عَنْ سَالِمِ بْنِ عَبْدِ اللَّهِ ، عَنْ أَبِيهِ ، قَالَ كَثِيرًا مَا كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَحْلِفُ بِهَذِهِ الْيَمِينِ " لاَ وَمُقَلِّبِ الْقُلُوبِ " . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ .
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.'"
Grade: Sahih (Darussalam)