4.
The Discourse on Way of Life
164.
There the Venerable Sāriputta addressed the monks - etc.
"Friends, a monk possessed of five qualities is suitable for living together with fellow monks in the holy life.
Which five?
Here, friends, a monk is himself accomplished in morality, and is one who answers a question that has come in a talk on accomplishment in morality;
he is himself accomplished in concentration, and is one who answers a question that has come in a talk on accomplishment in concentration;
he is himself accomplished in wisdom, and is one who answers a question that has come in a talk on accomplishment in wisdom;
he is himself accomplished in liberation, and is one who answers a question that has come in a talk on accomplishment in liberation;
he is himself accomplished in knowledge and vision of liberation, and is one who answers a question that has come in a talk on accomplishment in knowledge and vision of liberation.
Friends, a monk possessed of these five qualities is suitable for living together with fellow monks in the holy life."
The fourth.