Valmiki Ramayana Yuddha Kanda Sarga 83 Shloka 32
Original Shlokaअर्थेभ्योहिप्रवृद्धेभ्यःसम्वृत्तेभ्यस्ततस्ततः । क्रियाःसर्वाःप्रवर्तन्तेपर्वतेभ्यःइवापगाः ।।6.83.32।।
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ततस्ततः, by all those means, सम्वृत्तेभ्यःaugmented, प्रवृद्धेभ्यः developed, अर्थेभ्यःprosperity, पर्वतेभ्यः mountains, अपगाःइव rivers flow, सर्वा all, क्रियाः actions, प्रवर्तन्तेहि follow
"Prosperity is augmented gradually and developed by all means just as rivers flow from mountains, all undertakings follow conducive to success."