Digha Nikaya 1:506
SUJATO‘na tāvāhaṁ, pāpima, parinibbāyissāmi, yāva me bhikkhū na sāvakā bhavissanti viyattā vinītā visāradā bahussutā dhammadharā dhammānudhammappaṭipannā sāmīcippaṭipannā anudhammacārino, sakaṁ ācariyakaṁ uggahetvā ācikkhissanti desessanti paññapessanti paṭṭhapessanti vivarissanti vibhajissanti uttānīkarissanti, uppannaṁ parappavādaṁ sahadhammena suniggahitaṁ niggahetvā sappāṭihāriyaṁ dhammaṁ desessantī’ti.
‘Wicked One, I shall not be fully extinguished until I have monk disciples who are competent, educated, assured, learned, have memorized the teachings, and practice in line with the teaching. Not until they practice properly, living in line with the teaching. Not until they’ve learned their tradition, and explain, teach, assert, establish, disclose, analyze, and make it clear. Not until they can legitimately and completely refute the doctrines of others that come up, and teach with a demonstrable basis.’