Kimilasutta

sn54.10:2.1 When he said this, Kimbila kept silent.

sn54.10:2.2 For a second time …

sn54.10:2.3 And for a third time, the Buddha said to him,

sn54.10:2.4 “How is immersion due to mindfulness of breathing developed and cultivated so that it is very fruitful and beneficial?”

sn54.10:2.5 And a second time and a third time Kimbila kept silent.