Should be protected

Bhikkhus, in four instances diligent mindfulness should be protected by oneself. What four?

Diligent mindfulness should be protected for one's own sake thinking, may my mind not be greedy for greedy thoughts. Diligent mindfulness should be protected for one's own sake thinking, may my mind not be angry with angry thoughts. Diligent mindfulness should be protected for one's own sake thinking, may my mind not be deluded with deluding thoughts. Diligent mindfulness should be protected for one's own sake thinking, may my mind not be intoxicated with intoxicating thoughts.

Bhikkhus, when the bhikkhu's mind is not with greedy thoughts not with angry thoughts, not with deluded thoughts and not with intoxicated thoughts, he does not shiver, shake or tremble, even hearing the words of the recluse.