مُسْنَدُ أَحْمَدَ
Musnad Ahmad 4184
Musnad of Abdullah bin Mas'ood
It was narrated that ‘Abdullah said: The Messenger of Allah (ﷺ) said: "Whoever swears a false oath (when the judge has ordered him to swear an oath) in order to unlawfully take the property of another Muslim, will meet Allah when He is angry with him.” Then the verse was revealed: “Verily, those who purchase a small gain at the cost of Allah's Covenant and their oaths.” [Al ‘Imran 3:77].
Musnad Ahmad 4212Its isnad is saheeh, Muslim (138)]