The Book of Oaths and Vows
35/16. Chapter:
Expiation After Breaking An Oath
Sunan an-Nasai
أَخْبَرَنَا مُحَمَّدُ بْنُ قُدَامَةَ، فِي حَدِيثِهِ عَنْ جَرِيرٍ، عَنْ مَنْصُورٍ، عَنِ الْحَسَنِ الْبَصْرِيِّ، قَالَ عَبْدُ الرَّحْمَنِ بْنُ سَمُرَةَ قَالَ لِي رَسُولُ اللَّهِ صلى الله عليه وسلم " إِذَا حَلَفْتَ عَلَى يَمِينٍ فَرَأَيْتَ غَيْرَهَا خَيْرًا مِنْهَا فَأْتِ الَّذِي هُوَ خَيْرٌ وَكَفِّرْ عَنْ يَمِينِكَ " .
'Abdur-Rahman bin Samurah said: "The Messenger of Allah said to me: 'If you swear an oath, then you see something that is better, do that which is better, and offer expiation for your oath.'"
Reference : Sunan an-Nasa'i 3791In-book reference : Book 35, Hadith 31English translation : Vol. 4, Book 35, Hadith 3822