BG 5.19

इहैव तैर्जितः सर्गो येषां साम्ये स्थितं मनः ।
निर्दोषं हि समं ब्रह्म तस्माद्ब्रह्मणि ते स्थिताः ॥१९॥

ihaiva tair jitaḥ sargo
yeṣāṁ sāmye sthitaṁ manaḥ
nirdoṣaṁ hi samaṁ brahma
tasmād brahmaṇi te sthitāḥ

3 times this text was mentioned in purports to other texts: LBG(3)

iha - in this life; eva - certainly; taiḥ - by them; jitaḥ - conquered; sargaḥ - birth and death; yeṣām - whose; sāmye - in equanimity; sthitam - situated; manaḥ - mind; nirdoṣam - flawless; hi - certainly; samam - in equanimity; brahma - like the Supreme; tasmāt - therefore; brahmaṇi - in the Supreme; te - they; sthitāḥ - are situated.

Text

Those whose minds are established in sameness and equanimity have already conquered the conditions of birth and death. They are ﬂawless like Brahman, and thus they are already situated in Brahman.

Purport

Equanimity of mind, as mentioned above, is the sign of self-realization. Those who have actually attained to such a stage should be considered to have conquered material conditions, speciﬁcally birth and death. As long as one identiﬁes with this body, he is considered a conditioned soul, but as soon as he is elevated to the stage of equanimity through realization of self, he is liberated from conditional life. In other words, he is no longer subject to take birth in the material world but can enter into the spiritual sky after his death. The Lord is ﬂawless because He is without attraction or hatred. Similarly, when a living entity is without attraction or hatred, he also becomes ﬂawless and eligible to enter into the spiritual sky. Such persons are to be considered already liberated, and their symptoms are described below.

Bhagavad Gita As It Is.

Chapter 5: Karma-yoga — Action in Krishna Consciousness. Text 19

3 times this text was mentioned in purports to other texts: LBG(3)

Those whose minds are established in sameness and equanimity have already conquered the conditions of birth and death. They are ﬂawless like Brahman, and thus they are already situated in Brahman.