Valmiki Ramayana Bala Kanda Sarga 32 Shloka 6
Original Shlokaकुशाम्बस्तु महातेजा: कौशाम्बीमकरोत्पुरीम् । कुशनाभस्तु धर्मात्मा पुरं चक्रे महोदयम्।।1.32.6।।
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महातेजाः man possessing heroic lustre, कुशाम्बस्तु Kushamba on his part, कौशाम्बीम् Kaushambi, पुरीम् city, अकरोत् constructed, धर्मात्मा righteous, कुशनाभस्तु Kushanabha on his part, महोदयम् Mahodaya, पुरम् city, चक्रे constructed.
The brilliant Kushamba and the righteous Kushanabha constructed the cities of Kaushanbi and Mahodaya (as their capital) respectively.