Valmiki Ramayana Kishkindha Kanda Sarga 43 Shloka 7
Original Shlokaअर्थिनः कार्यनिर्वृत्तिमकर्तुरपि यश्चरेत्। तस्य स्यात्सफलं जन्म किं पुनः पूर्वकारिणः।।4.43.7।।
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यः whoever, अकर्तुरपि who has not helped, अर्थिनः by a needy man, कार्यनिर्वृत्तिम् fulfilling the task, चरेत् if one takes up, तस्य his, जन्म life, सफलं स्यात् will be fruitful, पूर्वकारिणः one who has helped earlier, किं पुनः what to say.
'Our life becomes fruitful when we help a person who was not helped us. What to speak of returning the help one has rendered.