Valmiki Ramayana Ayodhya Kanda Sarga 19 Shloka 21
Original Shlokaयदत्र भवतः किञ्चिच्छक्यं कर्तुं प्रियं मया। प्राणानपि परित्यज्य सर्वथा कृतमेव तत्।।2.19.21।।
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मया by me, अत्र भवतः to the venerable (father), किञ्चित् even a little, यत् प्रियम् which pleases him, कर्तुम् to do, शक्यम् is possible, तत् that one, प्राणान् life, परित्यज्यापि even by giving up, सर्वथा in every way, कृतमेव it is done.
If I am able to do anything which pleases my venerable father, it shall be done in every possible manner, may be even at the cost of my life.