Valmiki Ramayana Ayodhya Kanda Sarga 101 Shloka 6
Original Shlokaनिष्क्रान्तमात्रे भवति ससीते सहलक्ष्मणे। दुःखशोकाभिभूतस्तु राजा त्रिदिवमभ्यगात्।।2.101.6।।
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ससीते along with Sita, सहलक्ष्मणे with Lakshmana, भवति when you, निष्क्रान्तमात्रे had just set out, राजा king, दुःखशोकाभिभूतः griefstricken, त्रिदिवम् to heaven, अभ्यगात् went.
As soon as you set out for the forest along with Sita and Lakshmana, the king, overwhelmed with grief, attained heaven.