…“As to the mendicants who develop mindfulness of death by wishing to live for a day and night … or to live for a day … or to live as long as it takes to eat a meal of almsfood … or to live as long as it takes to chew and swallow four or five mouthfuls— these are called mendicants who live negligently. They slackly develop mindfulness of death for the ending of defilements.
But as to the mendicants who develop mindfulness of death by wishing to live as long as it takes to chew and swallow a single mouthful … or to live as long as it takes to breathe out after breathing in, or to breathe in after breathing out— these are called mendicants who live diligently. They keenly develop mindfulness of death for the ending of defilements.
So you should train like this: ‘We will live diligently. We will keenly develop mindfulness of death for the ending of defilements.’ That’s how you should train.”
Read the entire translation of Aṅguttara Nikāya 6.19 Paṭhamamaraṇassatisutta: Mindfulness of Death (1st) by Bhikkhu Sujato on SuttaCentral.net. Or read a different translation on DhammaTalks.org. Or listen on SC-Voice.net. Or explore the Pali on DigitalPaliReader.online.