The Discourse about the Great Emancipation

The Second Chapter for Recitation
signless mind-concentration, 77 and at that time, Ānanda, the Realised
One's body is most comfortable.
Therefore, Ānanda, live with yourself as an island, yourself as a
refuge, with no other refuge, with the Teaching as an island, the
Teaching as a refuge, with no other refuge. And how, Ānanda, does a
monk live with himself as an island, himself as a refuge, with no other
refuge, with the Teaching as an island, the Teaching as a refuge, with
no other refuge?
Here, Ānanda, a monk dwells contemplating (the nature of) the body
in the body, ardent, fully aware, and mindful, after removing avarice
and sorrow regarding the world; 78 he dwells contemplating (the nature
of) feelings in feelings, ardent, fully aware, and mindful, after
removing avarice and sorrow regarding the world; he dwells
contemplating (the nature of) the mind in the mind, ardent, fully
aware, and mindful, after removing avarice and sorrow regarding the
world; he dwells contemplating (the nature of) things in (various)
things, ardent, fully aware, and mindful, after removing avarice and
sorrow regarding the world.
77 In Paṭisambhidāmagga and Visuddhimagga this is known as
animittācetovimutti, which is the fruition of Worthiness, it arises for one
who applies his mind to impermanence as the predominant sign of
existence.
78 This is the summary of the ways of attending to mindfulness again (see
above, section 15).
70