Valmiki Ramayana Ayodhya Kanda Sarga 95 Shloka 9

क्वचित् at some places, मणिनिकाशोदाम् with water transparent as crystals, क्वचित् at some other places, पुलिनशालिनीम् sparkling with sand dunes, क्वचित् at some places, सिद्धजनाकीर्णाम् filled with siddhas (those acomplished in spiritual pursuits), मन्दाकिनीं नदीम् river Mandakini, पश्य see.

Behold this river Mandakini whose waters here are transparent like crystals, there sparkling with sand dunes and elsewhere crowded with siddhas.