Is the intensely angry killer pardoned, or is his punishment lightened, by analogy with the non-occurrence of divorce for the angry person, and what is the evidence for this from the Quran and the Sunnah?

An angry person is accountable for their actual actions, no matter how intense their anger. So, if he kills intentionally, he is to be executed. The majority of jurists hold that he is responsible in his state of anger and is held accountable for any apostasy, killing of a soul, or unlawful seizure of property that emanates from him. Ibn al-Qayyim emphasized that overcoming anger invalidates the rulings concerning the words of an angry person, but not their actions. If he were to kill in this state, he would be killed; or if he were to destroy something, he would be liable for it. Furthermore, the Salaf did not believe that an angry person is not held accountable for acts of apostasy or killing that emanate from him. The Malikis are of the view that striking a face out of anger and rage necessitates qisas (retaliation).