Sunan an Nasai
4128
Sahih+2

It was narrated that Masruq said:"The Messenger of Allah [SAW] 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

SahihAbu Ghuddah
SahihAl-Albani