Qatada قتادة · The Book on Blood Money

"The Messenger of Allah (ﷺ) judged that the son is to suffer retaliation for his son."

that the Prophet (ﷺ) said: 'The Hudud are not carried in the Masjid, and the father is not killed for the son."

from his father who said: "Whenever the Messenger of Allah (ﷺ) dispatched a commander of an army he would exhort him personally; that he should have Taqwa of Allah, and regarding those of the Muslims who are with him; that he should be good to them. He would say: 'Fight in the Name of Allah and in Allah's curse. Fight those who disbelieve in Allah and fight, do not be treacherous, nor mutilate, nor kill a child."