iti-thus; vyavasitah-having decided; viprah-the brahmanas; tasya-his; rajnah-of the king; prajataye-for the purpose of getting a son; purah-dasam-the paraphernalia of sacrifice; niravapan-offered; sipi-vistaya-to the Lord, who is situated in the sacrificial fire; visnave-to Lord Visnu.