At Sāvatthī.

Then, late at night, the glorious god Māgha, lighting up the entire Jeta’s Grove, went up to the Buddha, bowed, stood to one side, and addressed the Buddha in verse:

“When what is incinerated do you sleep at ease? 
When what is incinerated is there no sorrow? 
What is the one thing 
whose killing you approve?”

“When anger’s incinerated you sleep at ease. 
When anger’s incinerated there is no sorrow. 
Vatrabhū, anger has a poisonous root, 
and a honey tip. 
The noble ones praise its killing, 
for when it’s incinerated there is no sorrow.”