2:56
दुःखेष्वनुद्विग्नमनाः सुखेषु विगतस्पृहः ।
वीतरागभयक्रोधः स्थितधीर्मुनिरुच्यते ॥२- ५६॥
duHkheShwanudwignamanaaH sukheShu wigataspRRihaH ।
wiitaraagabhayakrodhaH sthitadhiirmuniruchyate ॥२- ५६॥
Source: Automatic ITRANS Transliteration
In sorrow serene-minded, in happiness avoiding gluttony,
[One] established in freedom from passion, fear, anger, is called "monk."
Source: Milind S. Pandit
A person whose mind is unperturbed by sorrow, who does not crave pleasures, and who is free from attachment, fear, and anger; such a person is called a sage of steady Prajna.
One who is not disturbed in spite of the threefold miseries, who is not elated when there is happiness, and who is free from attachment, fear and anger, is called a sage of steady mind.
Source: Bhagavad Gita As It Is