Valmiki Ramayana 2.61.3

कथम् नर वर श्रेष्ठ पुत्रौ तौ सह सीतया ।दुह्खितौ सुख सम्वृद्धौ वने दुह्खम् सहिष्यतः॥

katham nara vara śreṣṭha putrau tau saha sītayā |duhkhitau sukha samvṛddhau vane duhkham sahiṣyataḥ ||

Our plain-language meaning of this verse is waiting for scholar review.