Meaning
Supreme God Krishna spoke
Imbued with purified intellect, regulating the self through {Noble, Sāttvic} holding power of mind, restraining or forsaking the objects of senses like speech, etc. (i.e., observing silence and meditating in silence), casting away likes and dislikes, (18:51)
Residing in seclusion with frugal eating habits, keeping control over speech, body, and mind, remaining dedicated to Meditative Yoga practicing constant dispassion, (18:52)
And, by renouncing ego, aggression, vanity, carnal desire, anger, possessions, and the sense of "me and mine," one attains inner calm and becomes worthy of merging into Brahm. (18:53)
Sanskrit
श्रीभगवान् उवाच
अहंकारं बलं दर्पं कामं क्रोधं परिग्रहम् ।
विमुच्य निर्ममः शान्तो ब्रह्मभूयाय कल्पते ॥
Word-by-word
अहंकारम्, बलम्, दर्पम्, कामम्, क्रोधम्, परि-ग्रहम्वि
-मुच्य, नि:-मम:, शान्तः ब्रह्म-भूयाय कल्पते।