Valmiki Ramayana Aranya Kanda Sarga 41 Shloka 14
Original Shlokaस्वामिना प्रतिकूलेन प्रजास्तीक्ष्णेन रावण। रक्ष्यमाणा न वर्धन्ते मेषा गोमायुना यथा।।3.41.14।।
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रावण Ravana, प्रतिकूलेन by an unfavourable, तीक्ष्णेन by a rude one, स्वामिना by the master, रक्ष्यमाणाः protected, प्रजाः people, गोमायुना by a jackal, मेषाः यथा like sheep, न वर्धन्ते do not grow.
O Ravana, people who are ruled by a cruel and hostile king will not grow like the sheep protected by a jackal.