Sunan An-Nasa'i

It was narrated that Tha'labah bin Zahdam said:""some people from Banu Tha'labah came to the Prophet when he was delivering a speech and a man said; ""O Messenger of Allah, these are Banu Tha'labah bin Yarbu' who killed so and so' - one of the Companions of the Prophet The Prophet said: ""No soul is affected by the sin of another