The Dynasty of Vaivasvata Manu Begins — Ilā/Sudyumna and the Birth of Purūravā
अप्रजस्य मनो: पूर्वं वसिष्ठो भगवान् किल । मित्रावरुणयोरिष्टिं प्रजार्थमकरोद् विभु: ॥ १३ ॥
aprajasya manoḥ pūrvaṁ vasiṣṭho bhagavān kila mitrā-varuṇayor iṣṭiṁ prajārtham akarod vibhuḥ
At first Manu had no son. Therefore, for the sake of progeny, the mighty sage Vasiṣṭha performed a sacrifice to please the demigods Mitra and Varuṇa.
This verse states that when Manu was without children, Sage Vasiṣṭha performed an iṣṭi-yajña specifically for progeny, invoking the deities Mitra and Varuṇa.
Because Manu was childless; as Manu’s priest and well-wisher, Vasiṣṭha arranged a prajā-artham (progeny-oriented) ritual to help establish the royal lineage.
Seek guidance from qualified, principled mentors and pursue important life goals through dharmic means—combining sincere intention with disciplined, sanctified effort.