SN 35.94

cha'y'ime, bhikkhave, phass'āyatanā adantā aguttā arakkhitā asaṃvutā dukkh'ādhivāhā honti. katame cha? cakkhu, bhikkhave, phass'āyatanaṃ adantaṃ aguttaṃ arakkhitaṃ asaṃvutaṃ dukkh'ādhivāhaṃ hoti

SN 20.10

evam'eva kho, bhikkhave, idh'ekacco bhikkhu pubb'aṇhasamayaṃ nivāsetvā pattacīvaram'ādāya gāmaṃ vā nigamaṃ vā piṇḍāya pavisati arakkhiten'eva kāyena arakkhitāya vācāya arakkhitena cittena, anupaṭṭhitāya satiyā, asaṃvutehi indriyehi.