Paṭhamarahogatasutta
Evaṁ me sutaṁ— ekaṁ samayaṁ āyasmā anuruddho sāvatthiyaṁ viharati jetavane anāthapiṇḍikassa ārāme. Atha kho āyasmato anuruddhassa rahogatassa paṭisallīnassa evaṁ cetaso parivitakko udapādi: “yesaṁ kesañci cattāro satipaṭṭhānā viraddhā, viraddho tesaṁ ariyo maggo sammā dukkhakkhayagāmī. Yesaṁ kesañci cattāro satipaṭṭhānā āraddhā, āraddho tesaṁ ariyo maggo sammā dukkhakkhayagāmī”ti.
In Private (1st)
So I have heard. At one time Venerable Anuruddha was staying near Sāvatthī in Jeta’s Grove, Anāthapiṇḍika’s monastery. Then as Anuruddha was in private retreat this thought came to his mind: “Whoever has missed out on these four kinds of mindfulness meditation has missed out on the noble path to the complete ending of suffering. Whoever has undertaken these four kinds of mindfulness meditation has undertaken the noble path to the complete ending of suffering.”