Ramayana
यस्येयं प्रथमं दत्ता समृद्धा मनुना मही । तमिक्ष्वाकुमयोध्यायां राजानं विद्धि पूर्वकम् ॥ २-११०-७
Manu had orginally bestowed the most prosperous earth on Ikshvaku and you know Ikshvaku was the first king of Ayodhya. [2-110-7]
english translation
yasyeyaM prathamaM dattA samRddhA manunA mahI । tamikSvAkumayodhyAyAM rAjAnaM viddhi pUrvakam ॥ 2-110-7
hk transliteration by Sanscript