Valmiki Ramayana Ayodhya Kanda Sarga 50 Shloka 15

देवाऽऽक्रीडशताकीर्णां filled with hundreds of hills serving as sporting places for devatas देवोद्यानशतायुताम् hundreds of pleasuregardens for devatas, देवार्थम् for the sake of devatas, आकाशगमाम् flowing through heaven, देवपद्मिनीम् as Devapadmini, where celestial lotuses grow, विख्याताम् is wellknown.

Since this river flows through heavens for the gods, it is wellknown as 'Devapadmini' where celestial lotuses grow. The river embraces hundreds of hills serving as sporting places and pleasuregardens for gods.