One verse

Bhagavad Gita 4.24

4.24

ब्रह्मार्पणं ब्रह्म हविर्ब्रह्माग्नौ ब्रह्मणा हुतम् | ब्रह्मैव तेन गन्तव्यं ब्रह्मकर्मसमाधिना ||४-२४||

brahmārpaṇaṃ brahma havirbrahmāgnau brahmaṇā hutam . brahmaiva tena gantavyaṃ brahmakarmasamādhinā ||4-24||

brahma
spiritual in nature
arpaṇam
contribution
brahma
the Supreme
haviḥ
butter
brahma
spiritual
agnau
in the fire of consummation
brahmaṇā
by the spirit soul
hutam
offered
brahma
spiritual kingdom
eva
certainly
tena
by him
gantavyam
to be reached
brahma
spiritual
karma
in activities
samādhinā
by complete absorption

A person who is fully absorbed in Kṛṣṇa consciousness is sure to attain the spiritual kingdom because of his full contribution to spiritual activities, in which the consummation is absolute and that which is offered is of the same spiritual nature.