Valmiki Ramayana · Ayodhya Kanda · Sarga 3
यतस्त्वया प्रजाश्चेमा स्स्वगुणैरनुरञ्जिताः।।2.3.40।। तस्मात्त्वं पुष्ययोगेन यौवराज्यमवाप्नुहि।
yatastvayā prajāścemā ssvaguṇairanurañjitāḥ tasmāttvaṃ puṣyayogena yauvarājyamavāpnuhi|
As you have endeared yourself to these subjects with your virtues, you shall assume the office of heirapparent when Pushya star is in conjunction with the Moon.
— M.N. Dutt (1891)
Commentary
Dasharatha declares: you shall be crowned when the Pushya constellation rises. The timing is astrologically precise — Pushya is the most auspicious nakshatra for consecration. Heaven and earth are synchronised for Rama's installation.
पुष्ययौवराज्य