PURPORT

Since sacrifices are generally performed by fruitive actors, it is especially mentioned here (tatrapi) that although Maharaja Antardhana was externally engaged in performing sacrifices, his real business was rendering devotional service by hearing and chanting. In other words, he was performing the usual sacrifices by the method of saṅkirtana-yajna, as recommended herein:

sravanam kirtanam visnoh smaranam pada-sevanam
arcanam vandanam dasyam sakhyam atma-nivedanam
(Bhag. 7.5.23)

Devotional service is called kirtana-yajna, and by practicing the saṅkirtana-yajna, one is very easily elevated to the planet where the Supreme Lord resides. Out of the five kinds of liberations, achieving the same planet where the Lord resides and living with the Lord there is called salokya liberation.