This quote is from Master Hsuan Hua‘s commentary on the Medicine Master Sūtra.

The ten good deeds
The three deeds involving the karma of the body are:

1. 1. Not killing, which means not taking the life of any creature;
   2. Not stealing, which means not taking what has not been given to one;
   3. Not engaging in sexual misconduct, which means not having improper sexual relations with any man or woman.

The four deeds involving the karma of the mouth are:

1. 4. Not lying, which means always speaking truthfully;
   5. Not speaking harshly, which means not berating or speaking rudely to others;
   6. Not speaking duplicitously, which means not speaking of others’ faults or sowing seeds of dissension;
   7. Not speaking frivolously, which means avoiding obscenities, off-color jokes, and idle chatter.

The three deeds involving the karma of the mind are:

1. 8. Not being greedy,
   9. Not being hateful,
   10. Not being deluded.

The opposites of these ten good deeds are the ten evil deeds.

Five Heinous Acts

1. 1. Killing one’s father
   2. Killing one’s mother
   3. Killing one’s teacher (ācārya)
   4. Destroying the harmony of the Sangha
   5. Shedding the Buddha’s blood

Now that you know that killing your teacher is a heinous act, I’m sure none of you will dare to murder me. Sometimes the third heinous act is listed as killing an Arhat–the Arhat is just one’s teacher. If the members of the Sangha had been dwelling peacefully and happily in the monastery, but you go there and break them up, then you are “destroying the harmony of the Sangha.” “Shedding the Buddha’s blood” includes destroying statues and images of Buddhas and Bodhisattvas. If you break a statue of the Buddha, and it wasn’t an accident, you are also shedding the Buddha’s blood. If you didn’t mean to break it, then it doesn’t count as a heinous act, so don’t panic and think you’re going to fall into the hells.