"Here, in this kind of assembly, when those dis-courses are being recited that are mere poetry composed by poets, beautiful in words and phrases, created by outsiders, spoken by disciples, the bhikkhus do not want to listen to them, do not lend an ear to them, or apply their minds to understand them; they do not think those teachings should be studied and learned.
But when those discourses spoken by the Tathāgata are being recited that are deep, deep in meaning, world-transcending, connected with emptiness, the bhikkhus want to listen to them, lend an ear to them, and apply their minds to understand them; they think those teachings should be studied and learned. And having learned those teachings, they interrogate each other about them and examine them thoroughly, [asking]: "How is this? What is the meaning of this?' [They] disclose to [others] what is obscure and elucidate what is unclear, and dispel their perplexity about numerous perplexing points. This is called the assembly trained in interrogation, not in vain talk.
"These, bhikkhus, are the two kinds of assemblies. Of these two kinds of assemblies, the assembly trained in interrogation, not in vain talk, is foremost."
