tathā hi vivecayanty eva bāṣpādibhyo dhūmādīnabhyas tatatsvalakṣaṇāḥ / a{tha}vivecya pravṛttāścaite prāpnuvantyeva vahnim /
Indeed, [those who know] discriminate the specific characteristics of smoke and similar [things] from vapor and the like, and when they act after having discriminated, they certainly find fire.