Valmiki Ramayana Kishkindha Kanda Sarga 41 Shloka 48
Original Shlokaयस्तु मासान्निवृत्तोऽग्रे दृष्टा सीतेति वक्ष्यति।।4.41.48।। मत्तुल्यविभवो भोगै स्सुखं स विहरिष्यति।
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यः whoever, मासात् by one month, अग्रे before, निवृत्तः returns, सीता Sita, दृष्टा is seen, इति thus, वक्ष्यति tells me, सः he, मत्तुल्यविभवः he will be as rich as I am, भोगैः in luxury, सुखम् happily, विहरिष्यति will enjoy.
'He who returns in a month to announce Sita has been found will spend his life in luxury with as much prosperity as I do have.