Bhagavad Gita 2.27
जातस्य हि ध्रुवो मृत्युर्ध्रुवं जन्म मृतस्य च। तस्मादपरिहार्येऽर्थे न त्वं शोचितुमर्हसि॥
jātasya hi dhruvo mṛtyurdhruvaṃ janma mṛtasya ca tasmādaparihārye'rthe na tvaṃ śocitumarhasi
Meaning
For death is certain for that which is born, just as birth is certain for that which is dead. Therefore, do not grieve for what is inevitable.
Understanding this verse
Simple meaning
Krishna says that whatever is born will die, and whatever dies will be born again. Since this is unavoidable, don't drown in grief over what cannot be changed.
In real life
A family that has lost a pet slowly accepts that loss is part of loving any living being, and remembers the joy more than the pain.
A professional whose company shut down accepts that every venture has a lifespan, and puts her energy into what comes next.
Try this today: Name one thing you're still fighting that cannot be changed. Write one sentence of acceptance about it.
What's your duvidha?
English translation by Shri Purohit Swami (1935), public domain. Sanskrit text in the public domain. About Duvidha