Guru and devotees

Cooperate; do not quarrel in public

Work together with other devotees. If you disagree, do it quietly and respectfully, never in front of everyone.

A public quarrel hurts everyone watching and does little for the one who started it. Whatever the service is, give your hand to it, and bring your objections to the right person at the right time, kindly.

Whose teaching
Bhakti Charu Swami
Where it is taught
Bhakti Charu Swami on the behavior of a Vaiṣṇava
Source
ISKCON Desire Tree
Cooperate; do not quarrel in public · HariHariBol