। ॥ ५३१ ॥
In plain words
To know 'this is a jar', what rule do you actually need? None at all - only that your seeing is working properly. Given that, the knowledge of the thing is simply there.
Close to the Sanskrit
What rule, pray, is required to know 'this is a pot'? None - except the soundness of the means of knowledge, in whose presence alone the cognition of the object [directly] arises.