प्रत्युपकारpratyupakāra1 Returning a service or kindness, requital of an obligation, service in return.
यत्तु प्रत्त्युपकारार्थं फलमुद्दिश्य वा पुनः ।
कोशःDictionaries
V. S. Apte, The Practical Sanskrit–English Dictionary. Look up any word of the Gita in Devanagari, IAST or Harvard-Kyoto, or browse the headwords letter by letter.