Paṭhamaadhammasutta
“Adhammo ca, bhikkhave, veditabbo anattho ca; dhammo ca veditabbo attho ca. Adhammañca viditvā anatthañca, dhammañca viditvā atthañca yathā dhammo yathā attho tathā paṭipajjitabbaṁ.
Bad Principles (1st)
“Mendicants, you should know bad principles with bad results. And you should know good principles with good results. Knowing these things, your practice should follow the good principles with good results.