ב אֵין צָרִיךְ שֶׁיֵּדַע כָּל חִלּוּקֵי הַדִּינִים, אֶלָּא אִם אוֹמֵר עַל דָּבָר זֶה הָיִיתִי מִסְתַּפֵּק וְשׁוֹאֵל, קָרֵינַן בֵּהּ שַׁפִּיר יוֹדֵעַ, עַד שֶׁאוֹמֵר עַל הָאָסוּר מֻתָּר.

 

Seif 2

He does not need to know all of the different details of the laws, but rather if he says "concerning this matter I was in doubt and I asked (a competent rabbi)", such an individual is called "knowledgeable", until he calls that which is forbidden "permitted" (then he demonstrates his ignorance and incompetence).