Dutiya-sekha Sutta

Bhikkhus, in regard to external factors, I do not perceive another single factor so helpful as good friendship to a bhikkhu who is a learner, who has not attained perfection but lives aspiring for the supreme security from bondage. Bhikkhus, a bhikkhu who has a good friend abandons what is unwholesome and develops what is wholesome.��When a bhikkhu has good friends,�And is reverential and respectful,�Doing what his friends advise,�Clearly comprehending and mindful,�He may progressively attain�The destruction of all fetters.