Asavasutta 3.9

3.9

Yaṃ hissa, bhikkhave, manindriyasaṃvaraṃ asaṃvutassa viharato uppajjeyyuṃ āsavā vighātapariḷāhā, manindriyasaṃvaraṃ saṃvutassa viharato evaṃsa te āsavā vighātapariḷāhā na honti.

For the distressing and feverish defilements that might arise in someone who lives without restraint of the mind faculty do not arise when there is such restraint.