sāṁvatsaram - for one year; puṁsavanam - called puṁsavana; vratam - vow; etat - this; aviplutam - without violation; dhārayiṣyasi - you will perform; cet - if; tubhyam - for you; śakra-hā - the killer of Indra; bhavitā - will be; sutaḥ - a son.

Kaśyapa Muni continued: If you perform this ceremony called puṁsavana, adhering to the vow with faith for at least one year, you will give birth to a son destined to kill Indra. But if there is any discrepancy in the discharge of this vow, the son will be a friend to Indra.