Valmiki Ramayana Ayodhya Kanda Sarga 8 Shloka 38
Original Shlokaयदा हि रामः पृथिवीमवाप्स्यति प्रभूतरत्नाकरशैलपत्तनाम्। तदा गमिष्यस्यशुभं पराभवं सहैव दीना भरतेन भामिनि।।2.8.38।।
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भामिनि O lovely lady, राम: Rama, यदा when, प्रभूतरत्नाकरशैलपत्तनाम् with its oceans, mountains and towns, पृथिवीम् to this earth, अवाप्स्यति secures, तदा then, भरतेन सहैव along with Bharata, दीना become miserable, अशुभम् disgrace, गमिष्यसि will attain.
O lovely lady when Rama becomes the lord of this earth with its oceans, mountains and cities, then along with Bharata you will become miserable and fall into disgrace.