Al-Ash’ath b. Qais said:
A Jew and I shared some land and he denied my right, so I took him to the holy prophet ﷺ. The holy prophet ﷺ said to me: Have you have proof. I said: No. He then said to the Jew: Swear an oath I said Messenger of Allah,he will swear an oath and go off my property. So Allah sent down: “Those who barter for a small price Allah’s covenant and their oaths...." to the end of the verse.

حَدَّثَنَا مُحَمَّدُ بْنُ عِيسَى، حَدَّثَنَا أَبُو مُعَاوِيَةَ، حَدَّثَنَا الأَعْمَشُ، عَنْ شَقِيقٍ، عَنِ الأَشْعَثِ، قَالَ كَانَ بَيْنِي وَبَيْنَ رَجُلٍ مِنَ الْيَهُودِ أَرْضٌ فَجَحَدَنِي فَقَدَّمْتُهُ إِلَى النَّبِيِّ ﷺ قَالَ لِيَ النَّبِيُّ ﷺ " أَلَكَ بَيِّنَةٌ " . قُلْتُ لاَ . قَالَ لِلْيَهُودِيِّ " احْلِفْ " . قُلْتُ يَا رَسُولَ اللَّهِ إِذًا يَحْلِفَ وَيَذْهَبَ بِمَالِي . فَأَنْزَلَ اللَّهُ { إِنَّ الَّذِينَ يَشْتَرُونَ بِعَهْدِ اللَّهِ وَأَيْمَانِهِمْ } إِلَى آخِرِ الآيَةِ .