Dhamma Verses (Dhammapada, KN 2)

7: The Chapter about the Arahats – 98
The one liberated is calm in all he does
Ven. Tissa ordained a novice, who in the ordination hall
became an Arahat; later they travelled, and through the
carelessness of the monk the novice’s eye was put out; the
novice, however, didn’t get angry but went about his duties as
normal; the Buddha explained it with this verse.
96. Santaṁ tassa manaṁ hoti, santā vācā ca kamma’ ca,
sammad-aññāvimuttassa, upasantassa tādino.
His mind is calm, his speech is calm
and his actions are also calm,
liberated by right knowledge,
such a one is truly peaceful.