Rashankita's father performed the Vishwajit sacrifice, whose goal is heaven. Rituals can be performed without worldly desires if you are a spiritual seeker and perform them for Chitta Shuddhi, purification of the mind. If you pray for the welfare of everybody, then it's without any desire. It becomes Nishkama Karma. Vedanta-sara says, you give up all Karmya Karma. Qualifications for being an aspirant is that for aspiritual seeker to get fourfold qualifications.