Valmiki Ramayana Bala Kanda Sarga 23 Shloka 1

शर्वर्याम् when the night, प्रभातायाम् turned into day break, महामुनि: eminent ascetic, विश्वामित्र: Visvamitra, पर्णसंस्तरे in the bed of leaves, शयानौ lying down, काकुत्स्थौ Rama and Lakshmana, अभ्यभाषत spoke.

When the night turned into daybreak, the eminent ascetic Viswamitra, addressing the descendants of Kakutstha (Rama and Lakshmana) who were lying on a bed of leaves said: Accompanied by Rama and Lakshmana, Viswamitra reaches the hermitage of Kama at the confluence of Sarayu and Ganga.