Eight Rules
These eight qualities were:
the teacher of nuns must be virtuous;
second, have comprehensive knowledge of the Dhamma;
third he must be well acquainted with the Vinaya, especially the rules for nuns;
fourth, he must be a good speaker with a pleasant and fluent delivery, faultless in pronunciation, and intelligibly convey the meaning;
fifth, he should be able to teach Dhamma to the nuns in an elevating, stimulating, and encouraging way;
sixth, he must always be welcome to the nuns and liked by them—that is, they must be able to respect and esteem him not only when he praises them but especially when there is an occasion for reproach;
seventh, he must never have committed sexual misconduct with a nun;
eighth, he must have been a fully ordained Buddhist monk for at least 20 years (AN 8.52).
