Reading guide
A predator that waits, not one that attacks outright
The jackal never attacks the tortoise directly; it simply waits nearby for the tortoise to expose a limb or its neck. The danger described is passive and patient, matching how the discourse frames Māra as “always waiting nearby,” hoping for an opening rather than forcing one.
Six senses, one shell
The application runs the same sense-restraint formula already familiar from this vagga's own second discourse (SN 35.239) across all six senses, framing each as a limb the tortoise can choose to withdraw.
A jackal that leaves, not one that gives up trying
The text is precise: the jackal leaves “disappointed, since it couldn't find a vulnerability” — not because it abandoned its intent, but because the tortoise gave it no opportunity. The same wording is used for Māra: he leaves not by choice but by lack of opening.
A closing verse naming the practice directly
The four-line verse that closes the discourse instructs the mendicant to “collect their thoughts as a tortoise draws its limbs into its shell,” adding two further qualities not spelled out in the prose fable itself: being independent, not disturbing others, and quenched enough to blame no one.
Key terms
The text
§1“Once upon a time, mendicants, a tortoise was grazing along the bank of a river in the afternoon. At the same time, a jackal was also hunting along the river bank. The tortoise saw the jackal off in the distance hunting, so it drew its limbs and neck inside its shell, and kept passive and silent. But the jackal also saw the tortoise off in the distance grazing. So it went up to the tortoise and waited nearby, thinking, ‘When that tortoise sticks one or other of its limbs or neck out from its shell, I’ll grab it right there, rip it out, and eat it!’ But when that tortoise didn’t stick one or other of its limbs or neck out from its shell, the jackal left disappointed, since it couldn’t find a vulnerability.
§2In the same way, Māra the Wicked is always waiting nearby, thinking: ‘Hopefully I can find a vulnerability in the eye, ear, nose, tongue, body, or mind.’ That’s why you should live with sense doors guarded. When you see a sight with your eyes, don’t get caught up in the features and details. If the faculty of sight were left unrestrained, bad unskillful qualities of covetousness and displeasure would become overwhelming. For this reason, practice restraint, protecting the faculty of sight, and achieving its restraint. When you hear a sound with your ears … When you smell an odor with your nose … When you taste a flavor with your tongue … When you feel a touch with your body … When you know an idea with your mind, don’t get caught up in the features and details. If the faculty of mind were left unrestrained, bad unskillful qualities of covetousness and displeasure would become overwhelming. For this reason, practice restraint, protecting the faculty of mind, and achieving its restraint. When you live with your sense doors guarded, Māra will leave you disappointed, since he can’t find a vulnerability, just like the jackal left the tortoise.
§3A mendicant should collect their thoughts as a tortoise draws its limbs into its shell. Independent, not disturbing others, quenched: they wouldn’t blame anyone.”
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