In short: the Buddha's instruction was simple: "Mendicants, a mendicant should live mindful and aware. This is my instruction to you" (SN 47.2). Here are four genuine quotes, each with its source.
1. SN 47.2
"Mendicants, a mendicant should live mindful and aware. This is my instruction to you."
SN 47.2 · More
2. MN 118
"Just mindful, they breathe in. Mindful, they breathe out."
MN 118 · More
3. Dhammapada 21
"Heedfulness is the state free of death; heedlessness is the state of death. The heedful do not die, while the heedless are like the dead."
Dhammapada 21
4. Ud 1.10
"In the seen will be merely the seen; in the heard will be merely the heard."
Ud 1.10 · More
All quotes are from the early Buddhist texts in Bhikkhu Sujato's translation on SuttaCentral, copied exactly. Last checked: 18 October 2026.
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Questions people ask
What did the Buddha say about mindfulness?
'A mendicant should live mindful and aware. This is my instruction to you' (SN 47.2).