English translation
4549, 4550. Narrated Abū Wā'il: 'Abdullāh bin Mas'ūd رَضِيَ اللَّهُ عَنْهُ said, "Allāh's Messenger ﷺ said, 'Whoever takes an oath when asked to do so, in which he may deprive a Muslim of his property unlawfully, will meet Allāh, Who will be angry with him.' So Allāh revealed in confirmation of this statement: 'Verily, those who purchase a small gain at the cost of Allāh's Covenant and their oaths, they shall have no portion in the Hereafter...'" (V.3:77) The narrator added: Then Al-Ash'ath bin Qais came and said, "What is Abū 'Abdur-Rahmān narrating to you?" We replied, "Such and such." Al-Ash'ath said, "This Verse was revealed in my connection. I had a well in the land of my cousin (and he denied my possessing it). On that the Prophet ﷺ told me, 'Either you bring forward a proof or he (i.e., your cousin) takes an oath (to confirm his claim).' I said, 'I am sure he would take a (false) oath, O Allāh's Messenger.' He said, 'If somebody takes an oath when asked to do so through which he may deprive a Muslim of his property unlawfully and he is a liar in his oath, he will meet Allāh Who will be angry with him.'"