In the second chapter of the Bhagavad Gītā, Arjuna asks how the one of steady wisdom speaks, sits and walks. Kṛṣṇa describes a person free of desire, fear and anger, who withdraws the senses as a tortoise draws in its limbs and receives desires as the ocean receives rivers. Tradition reads the passage as a portrait of liberation in life.
Sthitaprajña
The person of steady wisdom whom the Bhagavad Gītā describes: content in the self, unmoved by pleasure and pain.
Also: Sthitaprajna