5 grave deeds (leading to rebirth in a hell)
5 grave deeds (leading to rebirth in a hell): 1. One who has killed his/her mother 2. One who has killed his/her father 3. One who has killed an arahant 4. One who, with a corrupted mind, has caused the blood of a Tathagata to flow 5. One who has caused a split in the Sangha (from Anguttara Nikaya 5.129)