Majjhima Nikaya 4:86
SUJATO‘yāvadeva sītassa paṭighātāya, uṇhassa paṭighātāya, ḍaṁsamakasavātātapasarīsapasamphassānaṁ paṭighātāya, yāvadeva utuparissayavinodanapaṭisallānārāmatthaṁ’.
‘Only for the sake of warding off cold and heat; for warding off the touch of flies, mosquitoes, wind, sun, and reptiles; to shelter from harsh weather and to enjoy retreat.’