Saṃyutta Nikāya 52 2. Dutiyavagga 17. Sabbatthagāminisutta “Imesañca panāhaṃ, āvuso, catunnaṃ satipaṭṭhānānaṃ bhāvitattā bahulīkatattā sabbatthagāminippaṭipadaṃ yathābhūtaṃ pajānāmī”ti. Sattamaṃ.