Sunan Ibn Majah, Book 13, Hadith 15 (In-Book) ⓘ

It was narrated that Ash'ath bin Qais Said: “There was a dispute between myself and a Jewish man concerning some land, and he denied me my rights so I brought him to the Prophet. The Messenger of Allah said to me: 'Do you have proof' I said: 'No.’ He said to the Jews, 'Swear an oath.' I said: 'If he swears an oath he will take my property.' Then Allah, Glorious is He, revealed: 'Verily, those who purchase a small gain at the cost of Allah's covenant and their oaths, they shall have no portion in the Hereafter (Paradise). Neither will Allah neither speak to them nor look at them on the Day of Resurrection nor will He purifies them, and they shall have a painful torment.'”

حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ، وَعَلِيُّ بْنُ مُحَمَّدٍ، قَالاَ حَدَّثَنَا وَكِيعٌ، وَأَبُو مُعَاوِيَةَ قَالاَ حَدَّثَنَا الأَعْمَشُ، عَنْ شَقِيقٍ، عَنِ الأَشْعَثِ بْنِ قَيْسٍ، قَالَ كَانَ بَيْنِي وَبَيْنَ رَجُلٍ مِنَ الْيَهُودِ أَرْضٌ فَجَحَدَنِي فَقَدَّمْتُهُ إِلَى النَّبِيِّ صلى الله عليه وسلم فَقَالَ لِي رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ هَلْ لَكَ بَيِّنَةٌ ‏"‏ ‏.‏ قُلْتُ لاَ ‏.‏ قَالَ لِلْيَهُودِيِّ ‏"‏ احْلِفْ ‏"‏ ‏.‏ قُلْتُ إِذًا يَحْلِفَ فَيَذْهَبَ بِمَالِي ‏.‏ فَأَنْزَلَ اللَّهُ سُبْحَانَهُ ‏{إِنَّ الَّذِينَ يَشْتَرُونَ بِعَهْدِ اللَّهِ وَأَيْمَانِهِمْ ثَمَنًا قَلِيلاً}‏ إِلَى آخِرِ الآيَةِ ‏.‏