"The Messenger of Allah said: 'I do not want to see you after I am gone reverting to disbelievers, striking the necks of one another (killing one another). No man is punished for the crime of his father, or the crime of his brother.'" This is correct.
Sunan an-Nasa'i Book 37, Hadith 163
← Previous Hadith "The Messenger of Allah said: 'Do not revert to disbelievers after I am gone, striking the necks of one another (killing one another). No man is to be punished for the sins of his father, or the sins of his brother.'"

Sunan an-Nasa'i Book 37, Hadith 162 Next Hadith → The Messenger of Allah said: "Do not revert to disbelievers after I am gone." It is Mursal.

Sunan an-Nasa'i Book 37, Hadith 164