Dhanañjānīsutta

sn7.1:8.1 “When anger’s slain you sleep at ease.

sn7.1:8.2 When anger’s slain there is no sorrow.

sn7.1:8.3 Anger has a poisonous root

sn7.1:8.4 and a sweet tip, O brahmin.

sn7.1:8.5 The noble ones praise its killing,

sn7.1:8.6 for when it’s slain there is no sorrow.”