Hadith #4136 (Sunan al-Nasa'i)
Book: The Book of Fighting [The Prohibition of Bloodshed]
Narrator(s): Abdur Rahman bin 'Abdullah b. 'Abdul Ha عبد الرحمن بن عبد الله بن عبد الحكم, al-Zuhri ابن شهاب الزهري‎, محمد بن مسلم, Jubayr bin Mut'im, Nafi' bin Yazid al-Kula'i نافع بن يزيد الكلاعي, Sa'id ibn al-Musayyib سعيد بن المسيب بن حزن أبو محمد القرشي, Sh'yb bin Yahya bin al-Sa'ib شعيب بن يحيى بن السائب, Yonus bin Yazid bin Abi al-Nijad يونس بن يزيد بن أبي النجاد

“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 for the sins of his brother.'”

Source: https://parallelquran.com/hadith/sunan-al-nasai-4136/