Ramayana
भगवन्किं प्रमाणेन मम वंशो भविष्यति । किमायुश्च हि मे रामः पुत्राश्चान्ये किमायुषः ॥ 7-51-8 ॥
"Reverend one, for how long a measure shall my lineage endure? What shall be the lifespan of my son Rama, and what the lifespan of my other sons?
english translation