[249] On one occasion the Blessed One was dwelling at Rājagaha in Jīvaka's Mango Grove. There the Blessed One addressed the bhikkhus … "Bhikkhus, develop concentration (samādhi). Bhikkhus, for a bhikkhu who is concentrated, things become evident (okkāyati) as they really are (yathābhūta). And what becomes evident as it really is? The eye becomes evident as it really is thus: 'It is impermanent.' Forms become evident as they really are thus: 'They are impermanent.' Eye-consciousness becomes evident as it really is thus: 'It is impermanent.' Eye-contact (cakkhusamphassa) becomes evident as it really is thus: 'It is impermanent.' Whatever feeling (vedanā) arises with eye-contact as condition — whether pleasant, or painful, or neither-painful-nor-pleasant — that too becomes evident as it really is thus: 'It is impermanent.' … The mind becomes evident as it really is thus: 'It is impermanent.' Mental phenomena (dhammā) become evident as they really are thus: 'They are impermanent.' … Whatever feeling arises with mind-contact as condition — whether pleasant, or painful, or neither-painful-nor-pleasant — that too becomes evident as it really is thus: 'It is impermanent.' Develop concentration (samādhi), bhikkhus. Bhikkhus, for a bhikkhu who is concentrated, things become evident as they really are."
The fifth.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.