TIRMIDHI 1400:
from ʿUmar b. al-Khaṭṭāb —
that the Messenger of Allah ﷺ said: "The father does not suffer retaliation for [killing] the son."
الترمذي ١٤٠٠:
عن عمر بن الخطاب —
سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ لاَ يُقَادُ الْوَالِدُ بِالْوَلَدِ