Mukhtasar Bukhari

Narrated Ibn Abbas (may Allah be pleased with them) that a man from the tribe of Bani Sahm set out on a journey with Tamim Dari and Adi bin Badda (may Allah be pleased with them). Then he died in a land where there was no Muslim. When Tamim and Adi (may Allah be pleased with them) brought his inheritance, a silver cup with golden engravings was missing. So the Messenger of Allah (peace and blessings of Allah be upon him) made both of them swear an oath, and they swore. After that, the cup was found in Mecca with some people who said, "We bought it from Tamim and Adi." Then two men from the relatives of the deceased stood up and swore an oath that "Our testimony is more acceptable than the testimony of both of them. We testify that this cup belongs to our (deceased) relative." (Ibn Abbas, may Allah be pleased with them, says) that this verse was revealed concerning them: "O you who believe! When death approaches any of you, let two just men from among you act as witnesses at the time of making the will, or two others from outside if you are traveling through the land and the calamity of death befalls you..." until the end of the verse.