sa punar yaḥ svayam eva veṇvādīnāṃ saṃgharṣasamudbhūtaḥ sa iha vyabhicāraviṣayatvena draṣṭavyaḥ /
That [fire] which arises by itself through the friction of bamboos and such things is to be considered here as an instance of deviation [from the rule].