Sayyiduna Sahl bin Abi Hathmah and (as Yahya thought) Sayyiduna Rafi' bin Khadij (may Allah be pleased with them both) said: Abdullah bin Sahl bin Zayd and Muhayyisah bin Mas'ud bin Zayd went out until, when they were at Khaybar, they separated in some place there. Then Muhayyisah found Abdullah bin Sahl slain, and he buried him. Then he came to the Messenger of Allah (peace and blessings be upon him) together with Huwayyisah bin Mas'ud and Abd al-Rahman bin Sahl, who was the youngest of them. Abd al-Rahman began to speak before his two companions, so the Messenger of Allah (peace and blessings be upon him) said to him: "Let the elder (speak)", meaning the elder in age. So he fell silent and his two companions spoke, then he spoke with them. They mentioned to the Messenger of Allah (peace and blessings be upon him) the killing of Abdullah bin Sahl, and he said to them: "Will you swear fifty oaths and so become entitled to (the blood of) your companion, or your killer?" They said: "How can we swear when we did not witness it?" He said: "Then the Jews will clear themselves of your claim with fifty oaths?" They said: "How can we accept the oaths of disbelievers?" When the Messenger of Allah (peace and blessings be upon him) saw that, he gave his blood money himself.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب القسامة / 16432