Sunan an-Nasa'i #3789 · The Book of Agriculture

Sunan an-Nasa'iIt was narrated that 'Abdur-Rahman bin Samurah said
Sunan an-Nasa'i · Book 35 · The Book of Agriculture
Sunan an-Nasa'i · كتاب 35 · كتاب المزارعة
"The Prophet said to me: 'If you swear an oath, and you see something that is better, then do that which is better and offer expiation for your oath
أَخْبَرَنَا زِيَادُ بْنُ أَيُّوبَ، قَالَ حَدَّثَنَا هُشَيْمٌ، قَالَ أَنْبَأَنَا مَنْصُورٌ، وَيُونُسُ، عَنِ الْحَسَنِ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ سَمُرَةَ، قَالَ قَالَ لِي النَّبِيُّ صلى الله عليه وسلم ‏
"‏ إِذَا آلَيْتَ عَلَى يَمِينٍ فَرَأَيْتَ غَيْرَهَا خَيْرًا مِنْهَا فَأْتِ الَّذِي هُوَ خَيْرٌ وَكَفِّرْ عَنْ يَمِينِكَ ‏"‏ ‏.‏
Reference : Sunan an-Nasa'i 3789In-book reference : Book 35, Hadith 29