“Bhikkhus, make an exertion in seclusion. A secluded bhikkhu understands things as they really are.”
The rest is identical with the preceding sutta. sn.iv.81
SN35.100: Paṭisallānasutta
Paṭisallānasutta: Seclusion - translated by Bhikkhu Bodhi
Parallels
Chinese ĀgamaSA206
Translated by Bhikkhu Bodhi. Source text via SuttaCentral.