 नास्य क्रोधः प्रसादश्च निरर्थोऽस्ति कदाचन।।हन्त्येव नियमाद्वध्यानवध्ये न च कुप्यति। 
 His anger or favour never goes in vain. He kills those who rightly deserve to be killed  and flares not at those whose life is to be spared. 