[109] And, Cunda, those [of you] who are in concord, in mutual harmony, and without disputing should train [in these things]. Suppose a certain companion in the spiritual life should speak the Dhamma in the Saṅgha. If it should then occur to you thus: "This venerable one, friend, both grasps the meaning wrongly and sets forth the phrasing wrongly" — you should neither approve of him nor reject him. Without approving and without rejecting, he should be addressed thus: "Friend, of this meaning, which are the more fitting — these phrasings or those phrasings? And of these phrasings, which is the more fitting — this meaning or that meaning?" If he should say thus: "Friend, of this meaning, these very phrasings are the more fitting, rather than those; and of these phrasings, this very meaning is the more fitting, rather than that" — he should be neither extolled nor disparaged. Without extolling and without disparaging, that very person should be carefully made to understand, for the close examination of that meaning and of those phrasings.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.