sn54.12:7.1 Then after three months had passed, the Buddha came out of retreat and addressed the mendicants:
sn54.12:7.2 ‘Mendicants, if wanderers who follow another religion were to ask you:
sn54.12:7.3 “Reverends, what was the ascetic Gotama’s usual meditation during the rainy season residence?” You should answer them like this:
sn54.12:7.4 “Reverends, the ascetic Gotama’s usual meditation during the rainy season residence was immersion due to mindfulness of breathing.”
sn54.12:7.5 In this regard: mindful, I breathe in. Mindful, I breathe out.
sn54.12:7.6 Breathing in heavily I know: “I’m breathing in heavily.” Breathing out heavily I know: “I’m breathing out heavily.” …
sn54.12:7.7 I know: “I’ll breathe in observing letting go.” I know: “I’ll breathe out observing letting go.”