na prahṛiṣhyet priyaṁ prāpya nodvijet prāpya chāpriyam
sthira-buddhir asammūḍho brahma-vid brahmaṇi sthitaḥ
Meaning: Established in God, having a firm understanding of divine knowledge and not hampered by delusion, they neither rejoice in getting something pleasant nor grieve on experiencing the unpleasant.
brahma-vit—having a firm understanding of divine knowledge;
brahmaṇi—established in God;