B.G 3.09

यज्ञार्थात् कर्मणोन्यत्र लोकोयं कर्मबन्धनः। तदर्थं कर्म कौन्तेय मुक्तसङ्गः समाचर ॥९॥

yajñārthāt karmaṇōnyatra lōkōyaṁ karmabandhanaḥ। tadarthaṁ karma kauntēya muktasaṅgaḥ samācara ॥9॥

[यज्ञार्थात् कर्मणः अन्यत्र लोकः अयं कर्मबन्धनः। तत् अर्थं कर्म कौन्तेय मुक्तसङ्गः समाचर॥
yajñārthāt = sacrifice, as a worship to lord; karmaṇaḥ = actions performed; anyatra = otherwise; lōkaḥ = world; ayaṁ = this; karmabandhanaḥ = bondage due to action; tat arthaṁ = for his sake; karma = perform actions; kauntēya = O Arjuna; muktasaṅgaḥ = free from attachment; samācara = practice with equanimity;]

Actions must be performed as a sacrifice to worship the Lord. Otherwise, actions performed for the wordly sake lead to bondage. So, practice actions without attachment, with equanimity, for His sake.

Gīta Tātparya 3.09

'Jna' means lord Vishnu. 'Yajna' means prescribed duties to be performed for lord Vishnu's sake.

"कर्मणा बध्यते जन्तुः"

"karmaṇā badhyatē jantuḥ"

["karmaṇā = from action; badhyatē = are bound; jantuḥ = beings"]

"Beings are bound by action."

इत्यादिकमपि अवैष्णवकर्मविषयमित्याह - यज्ञार्थादिति।

ityādikamapi avaiṣṇavakarmaviṣayamityāha - yajñārthāditi।

[ityādikamapi = these are; avaiṣṇavakarmaviṣayamityāha = meant for non Vaishnava actions, Hence it is told; yajñārthāditi = perform action for the sake of 'Yajna';]

Such statements are meant for non Vaishnava actions. Hence in the 'Yajna' verse it is told, perform action for the sake of 'Yajna'.

"ज्ञो नाम भगवान् विष्णुः तं यात्युद्देश एष यः। स यज्ञ इति सम्प्रोक्तो विहिते कर्मणि स्थितः॥"

इति बर्कश्रुतिः ॥९॥

"jñō nāma bhagavān viṣṇuḥ taṁ yātyuddēśa ēṣa yaḥ। sa yajña iti samprōktō vihitē karmaṇi sthitaḥ॥"

iti barkaśrutiḥ ॥9॥

["jñō nāma bhagavān viṣṇuḥ = lord Vishnu is known by the name 'jñō'; taṁ yātyuddēśa = for the purpose of him; ēṣa yaḥ = that which; sa yajña = is 'Yajna'; iti samprōktō = thus it is told; vihitē karmaṇi = prescribed duties; sthitaḥ = are stationed;]

[iti barkaśrutiḥ = stated Barka Vedic testimonial.]

"Lord Vishnu is known by the name 'Jna' (the knowledgeable). The stated prescribed duties to be performed for His sake are said to be 'Yajna'."

-states Barka Vedic testimonial.