Digha Nikaya 1:69
SUJATOYāvakīvañca, bhikkhave, bhikkhū samaggā sannipatissanti, samaggā vuṭṭhahissanti, samaggā saṅghakaraṇīyāni karissanti, vuddhiyeva, bhikkhave, bhikkhūnaṁ pāṭikaṅkhā, no parihāni.
As long as the mendicants meet in harmony, leave in harmony, and carry on their business in harmony, they can expect growth, not decline.