صحيح البخاري Sahih Bukhari كتاب الأيمان والنذور The Book of Oaths and Vows
بَابُ قَوْلِ اللَّهِ تَعَالَى: {إِنَّ الَّذِينَ يَشْتَرُونَ بِعَهْدِ اللَّهِ وَأَيْمَانِهِمْ ثَمَنًا قَلِيلاً أُولَئِكَ لاَ خَلاَقَ لَهُمْ فِي الآخِرَةِ وَلاَ يُكَلِّمُهُمُ اللَّهُ وَلاَ يَنْظُرُ إِلَيْهِمْ يَوْمَ الْقِيَامَةِ وَلاَ يُزَكِّيهِمْ وَلَهُمْ عَذَابٌ أَلِيمٌ} :

(17) Chapter. The Statement of Allah: “Verily, those who purchase a small gain at the cost of Allah’s Covenant and their oaths..." (V.3:77) And also the Statement of Allah: "And purchase not a small gain at the cost of Allah’s Covenant. Verily! What is with Allah is better for you if you did but know." (V.16:95) And fulfil the Convenant of Allah (Baia: pledge for Islam) when you have convenanted, and break not the oaths after you have confirmed them - and indeed you have appointed Allah your surety..." (V.16:91)

2 hadith
Hadith 6676
حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ ، حَدَّثَنَا أَبُو عَوَانَةَ ، عَنْ الْأَعْمَشِ ، عَنْ أَبِي وَائِلٍ ، عَنْ عَبْدِ اللَّهِ رَضِيَ اللَّهُ عَنْهُ ، قَالَ : قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : " مَنْ حَلَفَ عَلَى يَمِينِ صَبْرٍ ، يَقْتَطِعُ بِهَا مَالَ امْرِئٍ مُسْلِمٍ ، لَقِيَ اللَّهَ وَهُوَ عَلَيْهِ غَضْبَانُ " ، فَأَنْزَلَ اللَّهُ تَصْدِيقَ ذَلِكَ : إِنَّ الَّذِينَ يَشْتَرُونَ بِعَهْدِ اللَّهِ وَأَيْمَانِهِمْ ثَمَنًا قَلِيلا سورة آل عمران آية 77 إِلَى آخِرِ الْآيَةِ .
Narrated `Abdullah: Allah's Apostle said, "If somebody is ordered (by the ruler or the judge) to take an oath, and he takes a false oath in order to grab the property of a Muslim, then he will incur Allah's Wrath when he will meet Him." And Allah revealed in its confirmation: 'Verily! Those who purchase a small gain at the cost of Allah's covenants and their own oaths.' (3.77)
Hadith Reference Sahih Bukhari / The Book of Oaths and Vows / Hadith: 6676
Hadith Grading محدثین: أحاديث صحيح البخاريّ كلّها صحيحة
Hadith 6677
فَدَخَلَ الْأَشْعَثُ بْنُ قَيْسٍ ، فَقَالَ : مَا حَدَّثَكُمْ أَبُو عَبْدِ الرَّحْمَنِ ، فَقَالُوا : كَذَا وَكَذَا ، قَالَ : فِيَّ أُنْزِلَتْ ، كَانَتْ لِي بِئْرٌ فِي أَرْضِ ابْنِ عَمٍّ لِي ، فَأَتَيْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، فَقَالَ : " بَيِّنَتُكَ أَوْ يَمِينُهُ " ، قُلْتُ : إِذًا يَحْلِفُ عَلَيْهَا يَا رَسُولَ اللَّهِ ، فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : " مَنْ حَلَفَ عَلَى يَمِينِ صَبْرٍ وَهُوَ فِيهَا فَاجِرٌ ، يَقْتَطِعُ بِهَا مَالَ امْرِئٍ مُسْلِمٍ ، لَقِيَ اللَّهَ يَوْمَ الْقِيَامَةِ وَهُوَ عَلَيْهِ غَضْبَانُ " .
(The sub-narrator added:) Al-Ash'ath bin Qais entered, saying, "What did Abu `Abdur-Rahman narrate to you?" They said, "So-and-so," Al-Ash'ath said, "This verse was revealed in my connection. I had a well on the land of my cousin (and we had a dispute about it). I reported him to Allah 's Apostle who said (to me). "You should give evidence (i.e. witness) otherwise the oath of your opponent will render your claim invalid." I said, "Then he (my opponent) will take the oath, O Allah's Apostle." Allah's Apostle said, "Whoever is ordered (by the ruler or the judge) to give an oath, and he takes a false oath in order to grab the property of a Muslim, then he will incur Allah's Wrath when he meets Him on the Day of Resurrection."
Hadith Reference Sahih Bukhari / The Book of Oaths and Vows / Hadith: 6677
Hadith Grading محدثین: أحاديث صحيح البخاريّ كلّها صحيحة