صَحِيحُ الْبُخَارِيِّ
Sahih al-Bukhari 6719
Expiation for Unfulfilled Oaths
To say: “In sha’ Allah” while taking an oath
حَدَّثَنَا أَبُو النُّعْمَانِ، حَدَّثَنَا حَمَّادٌ، وَقَالَ، " إِلاَّ كَفَّرْتُ يَمِينِي، وَأَتَيْتُ الَّذِي هُوَ خَيْرٌ ". أَوْ " أَتَيْتُ الَّذِي هُوَ خَيْرٌ، وَكَفَّرْتُ ".
Narrated Hammad: the same narration above (i.e. 709), "I make expiation for my dissolved oath, and I do what is better, or do what is better and make expiation."
Sahih al-Bukhari, 6719Sahihصحيح