Saṁyutta Nikāya 52.19 2. Dutiyavagga Nānādhimuttisutta

“Imesañca panāhaṁ, āvuso, catunnaṁ satipaṭṭhānānaṁ bhāvitattā bahulīkatattā sattānaṁ nānādhimuttikataṁ yathābhūtaṁ pajānāmī”ti.

“… And it’s because of developing and cultivating these four kinds of mindfulness meditation that I truly understand the diverse convictions of sentient beings.”

Navamaṁ.