Saṃyutta Nikāya 52
2. Dutiyavagga
13. Dibbasotasutta
“Imesañca panāhaṃ, āvuso, catunnaṃ satipaṭṭhānānaṃ bhāvitattā bahulīkatattā dibbāya sotadhātuyā visuddhāya atikkantamānusikāya ubho sadde suṇāmi dibbe ca mānuse ca ye dūre santike cā”ti.
Tatiyaṃ.