nirūpyante 'gnayas tu te

vaitanike-offering of oblations; karmani-the activity; yat-of the fire-gods; namabhih-by the names; brahma-vadibhih-by impersonalist brahmanas; agneyyah-for Agni; istayah-sacrifices; yajne-in the sacrifice; nirupyante-are the objective; agnayah-the forty-nine fire-gods; tu-but; te-those.