It was narrated from Al-Aswad bin Hilal - who met the Prophet - from a man from Banu Tha'labah bin Yarbu, that: some people from Banu Tha'labah killed a man from among the companions of the Messenger of Allah. A man from among the companions of the Messenger of the Allah said: "O Messenger of Allah, these are Banu Tha'labah who killed so and so." The Messenger said: "No soul is affected by the sin of another." Shu'bah (one of the narrators) said: "That means: No soul is responsible for the sin of anothe4r, and Allah knows best."