The Book of Oaths and Vows
35/16. Chapter:
Expiation After Breaking An Oath
Sunan an-Nasai
أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا يَحْيَى، قَالَ حَدَّثَنَا ابْنُ عَوْنٍ، عَنِ الْحَسَنِ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ سَمُرَةَ، قَالَ قَالَ يَعْنِي رَسُولَ اللَّهِ صلى الله عليه وسلم " إِذَا حَلَفْتَ عَلَى يَمِينٍ فَرَأَيْتَ غَيْرَهَا خَيْرًا مِنْهَا فَأْتِ الَّذِي هُوَ خَيْرٌ مِنْهَا وَكَفِّرْ عَنْ يَمِينِكَ " .
'Abdur-Rahman bin Samurah said: "The Messenger of Allah said: 'If you swear an oath, then you see something that is better, then do that which is better and offer expiation for your oath.'"
Reference : Sunan an-Nasa'i 3790In-book reference : Book 35, Hadith 30English translation : Vol. 4, Book 35, Hadith 3821