Bhagavad Gita 2.37

If you are killed, you will attain Heaven; if you are victorious, you will enjoy the kingdom of earth. Therefore, arise, O Son of Kunti, and fight!

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

hato vā prāpsyasi svargaṃ jitvā vā bhokṣyase mahīm|
tasmāduttiṣṭha kaunteya yuddhāya kṛtaniścayaḥ||

English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).