Theragatha 1.52

Although the monk talks about being protected by the rain in his kuti, it can also be metaphorical. "My mind is serene in my body" also means that a trained mind is not affected by worldly troubles.

"The sky rains down, like a beautiful song,
My little hut is ro­ofed and pleasant,
Sheltered from the wind.
My mind is serene in my body:
So rain, sky, as you please."

“Vassati devo yathā sugītaṃ,
Channā me kuṭikā sukhā nivātā;
Cittaṃ susamāhitañca kāye,
Atha ce patthayasi pavassa devā”ti.

… Subāhutthero …