न प्रहृष्येत्प्रियं प्राप्य नोद्विजेत्प्राप्य चाप्रियम्।
स्थिरबुद्धिरसम्मूढो ब्रह्मविद्ब्रह्मणि स्थितः।।5.20।।
5.20. He who, with his self (mind) not attached to the external contacts, finds happiness in the Self-that person, with his self engaged in the Yoga, pervades easily, suffering no loss, the Brahman.
5.20 Na prahrsyet etc. In the case of this person, who habitually looks [upon all] alike, the classification of foes and friends is at the level of mundane business alone, and not internally, as he is firmly established in the Brahman.
Na prahrishyet priyam praapya nodwijet praapya chaapriyam; Sthirabuddhir asammoodho brahmavid brahmani sthitah.
na—neither; prahṛiṣhyet—rejoice; priyam—the pleasant; prāpya—obtaining; na—nor; udvijet—become disturbed; prāpya—attaining; cha—also; apriyam—the unpleasant; sthira-buddhiḥ—steady intellect; asammūḍhaḥ—firmly situated; brahma-vit—having a firm understanding of divine knowledge; brahmaṇi—established in God; sthitaḥ—situated