B.G 2.37

हतो वा प्राप्स्यसि स्वर्गं जित्वा वा भोक्ष्यसे महीम्। तस्मादुत्तिष्ठ कौन्तेय युद्धाय कृतनिश्चयः ॥२-३७॥

hato vā prāpsyasi svargaṁ jitvā vā bhokṣyase mahīm। tasmāduttiṣṭha kaunteya yuddhāya kṛtaniścayaḥ ॥2-37॥

[हतः (hataḥ) - slain; वा (vā) - or; प्राप्स्यसि (prāpsyasi) - you will attain; स्वर्गम् (svargam) - heaven; जित्वा (jitvā) - having conquered; वा (vā) - or; भोक्ष्यसे (bhokṣyase) - you will enjoy; महीम् (mahīm) - the earth; तस्मात् (tasmāt) - therefore; उत्तिष्ठ (uttiṣṭha) - arise; कौन्तेय (kaunteya) - O son of Kunti; युद्धाय (yuddhāya) - for battle; कृतनिश्चयः (kṛtaniścayaḥ) - with determination;]

(If you are killed, you will attain heaven; if victorious, you will enjoy the earth. Therefore, stand up, O son of Kunti, and fight with determination.)

O son of Kunti, If killed, you will attain heaven; if victorious, you will enjoy the earth. Therefore, rise, determined to fight.

Gīta Tātparya 2.37

Within the purview of one's own duty, 'swa-dharma', fighting for the right cause is always beneficial.

जित्वा स्वर्गं महीं च।

jitvā svargaṃ mahīṃ ca।

[जित्वा (jitvā) - having conquered; स्वर्गं (svargaṃ) - heaven; महीं (mahīṃ) - earth; च (ca) - and;]

(Having conquered both heaven and earth.)

Being victorious, you will enjoy both heaven and rulership over earth.

"ये युद्ध्यन्ते प्रधनेषु शूरासो ये तनुत्यजः"

"ye yuddhyante pradhaneṣu śūrāso ye tanutyajaḥ"

[ये (ye) - those who; युद्ध्यन्ते (yuddhyante) - fight; प्रधनेषु (pradhaneṣu) - in battles; शूरासः (śūrāsaḥ) - heroes; ये (ye) - those who; तनुत्यजः (tanutyajaḥ) - sacrifice their bodies;]

(The heroes who fight in battles and sacrifice their bodies are truly valiant.)

"Those who fight on the battlefield forsaking their body are brave."

इति श्रुतेः॥३७-३८॥

iti śruteḥ॥37-38॥

[इति (iti) - thus; श्रुतेः (śruteḥ) - of the scripture;]

-state Vedic testimonials.