Does a pledge made in a state of anger remain valid, and does breaking it entail fasting?

If the utterance is made involuntarily due to extreme anger, then nothing is binding, for the Prophet, peace and blessings be upon him, said: "There is no divorce and no manumission in ighlaq." The imams, such as Imam Ahmad, Al-Shafi'i, Masruq, Abu Dawud, and Qadi Ismail, interpreted ighlaq as anger, and it is like one who is coerced or even more severe. However, if the anger does not remove one's intellect, then the utterance is treated as an oath, and expiation becomes binding, which is feeding ten poor persons, or clothing them, or emancipating a slave, or fasting three days if unable to do the former.