Chapter 2 - Verse 56

(2) Equanimity in pleasure and pain.

Moreover,

दुःखेष्वनुद्विग्नमनाः सुखेषु विगतस्पृहः ।
वीतरागभयक्रोधः स्थितधीर्मुनिरुच्यते ॥ ५६ ॥

duḥkheṣvanudvignamanāḥ sukheṣu vigataspṛhaḥ .
vītarāgabhayakrodhaḥ sthitadhīrmunirucyate .. 56 ..


He whose heart is not distressed in calamities, from whom all longing for pleasures has departed, who is free from attachment, fear and wrath, he is called a sage, a man of steady knowledge.
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His heart if not distressed in calamities such as may arise from disorder in the body*, (adhyatmika), etc. Unlike fire, which increases as fuel is added, his longing for pleasures does not increase as more pleasures are attained. He is said to be a man of steady knowledge. He is called a sage, a Sannyasin, one who has renounced works.

Calamities are divided into the three following classes according to their sources :
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Adhyātmika, arising from disorder in one’s own body;
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Adhibhautika, arising from external object such as a tiger;
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Adhidaivika, arising from the action of great, intelligent, cosmic forces such as those which cause rain and storm or such beings as Yakshas, Rākshasas and Pisāchas.
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Pleasures also are divided into the same three classes.

(3) Absence of attachment, delight and aversion.

Moreover: