And how does a mendicant still, settle, unify, and immerse their mind in samādhi internally?

It’s when a mendicant, quite secluded from sensual pleasures, secluded from unskillful qualities, enters and remains in the first absorption … second absorption … third absorption … fourth absorption. That’s how a mendicant stills, settles, unifies, and immerses their mind in samādhi internally.

They focus on emptiness internally, but their mind does not leap forth, gain confidence, settle down, and become decided. In that case, they understand: ‘I am focusing on emptiness internally, but my mind does not leap forth, gain confidence, settle down, and become decided.’ In this way they are aware of the situation. They focus on emptiness externally … They focus on emptiness internally and externally … They focus on the imperturbable, but their mind does not leap forth, gain confidence, settle down, and become decided. In that case, they understand: ‘I am focusing on the imperturbable internally, but my mind does not leap forth, gain confidence, settle down, and become decided.’ In this way they are aware of the situation.