Verse
न प्रहृष्येत्प्रियं प्राप्य नोद्विजेत्प्राप्य चाप्रियम् ।स्थिरबुद्धिरसंमूढो ब्रह्मविद् ब्रह्मणि स्थितः ॥
na prahṛṣyetpriyaṃ prāpya nodvijetprāpya cāpriyamsthirabuddhirasaṃmūḍho brahmavid brahmaṇi sthitaḥ
With intelligence stable, unbewildered, the knower of the Brahman, living in the Brahman, neither rejoices on obtaining what is pleasant, nor sorrows on obtaining what is unpleasant.
Gītā 5·20