Wikipedia
Ānantarika-karma or ānantarika-kamma is a heinous crime that through karmic process brings immediate disaster. They are called ‘anantarika’ because they are ‘an’ (without) ‘antara’ (interval), in other words the results immediately come to fruition in the next life, i.e. the participant goes straight to hell. These are considered so heinous that Buddhists and non-Buddhists must avoid them. According to Buddhism, committing such a crime would prevent the perpetrator from attaining the stages of sotāpanna, sakadagami, anāgāmi or arhat in that lifetime. The five crimes are:
- Intentionally murdering one's father
- Intentionally murdering one's mother
- Killing an Arhat (enlightened being)
- Shedding the blood of a Buddha
- Creating a schism within the Sangha, the community of Buddhist monks and nuns who try to attain enlightenment.
In Mahayana Buddhism these five crimes are referred to as pañcānantarya and are mentioned in "The Sutra Preached by the Buddha on the Total Extinction of the Dharma".