ماجهيما نيكايا 4:89
SUJATOYañhissa, bhikkhave, appaṭisevato uppajjeyyuṁ āsavā vighātapariḷāhā, paṭisevato evaṁsa te āsavā vighātapariḷāhā na honti.
For the distressing and feverish defilements that might arise in someone who lives without using these things do not arise when they are used.