Tatiyaabhabbaṭṭhāna Sutta

“Monks, six things are impossible.

What are they?

It is impossible for one who sees [the Dhamma]:

(1) To deprive their mother of life;

(2) To deprive their father of life;

(3) To deprive a Perfected being of their life;

(4) To shed the Truth-Finder’s blood with corrupted ambitions,

(5) To bring about a schism in the community;

(6) To change for another teacher. [1]

These six things are impossible monks.