Trường Bộ Kinh (Digha Nikaya) 1:1069
SUJATOTasmātihānanda, dhammānudhammappaṭipannā viharissāma sāmīcippaṭipannā anudhammacārinoti.
So Ānanda, you should train like this: ‘We shall practice in line with the teaching, practicing properly, living in line with the teaching.’”