سنن النسائي

It was narrated from Abu Laila bin 'Abdullah bin 'Abdur-Rahman bin Sahl, from Sahl bin Abi Hathmah, that: he informed him, ans some men among the elders of his people, that "Abdullah bin Sahl and Muhayysah set out for Khaibar because of some problem that had arisen. Someone came to Muhayysah, and he told him that 'Abdullah bin Sahl had been killed and thrown into a pit or well. He came to the Jews and said: "By Allah, you killed him." They said: "By Allah, we did not kill him." Then he went baack to his people and told them about that. Then he and his brother Huwayysah, who was older than him, and 'Abdur-Rahman bin Sahl, came (to the prophet). Muhayysah, who was the one who had been at Khaibar, bnegan to speak, but the Messenger of Allah (ﷺ) said: "Let the elder speak first." So Huwayysah spoke, then Muhayysah spoke. The Messenger of Allah (ﷺ) said: "Either (the Jews) will pay the Diyah for your companion, or war will be declared on them." The Messenger of Allah (ﷺ) sent a letter to that effect (to the Jews) and they wrote back saying: "By Allah, we did not kill him." The Messenger of Allah (ﷺ) and 'Abdur-Rahman: "Will you swear an oath establishing your claim to the blood money of your companion?" They said: "No." He said: "Should the Jews swear an oath for you?" They said: "They are not Muslims." So the Messenger of Allah (ﷺ) paid it himself, and he sent one hundred she-camels to their abodes. Sahl said: "A red she-camel from among them kicked me."