Digha Nikaya 1:119
SUJATOYāvakīvañca, bhikkhave, ime cha aparihāniyā dhammā bhikkhūsu ṭhassanti, imesu ca chasu aparihāniyesu dhammesu bhikkhū sandississanti, vuddhiyeva, bhikkhave, bhikkhūnaṁ pāṭikaṅkhā, no parihānī”ti.
As long as these six principles that prevent decline last among the mendicants, and as long as the mendicants are seen following them, they can expect growth, not decline.”