Valmiki Ramayana Ayodhya Kanda Sarga 55 Shloka 13

अथ thereafter, सर्वे all of them, शीघ्रस्रोतोवहाम् rapidly flowing, कालिन्दीं नदीम् river Kalindi, आसाद्य having reached, नदीजलतितीर्षव: wishing to cross the river, चिन्ताम् अपेदिरे pondered.

Thereafter, they all reached the rapidly flowing river Kalindi and began pondering how to cross it.