64. And because (Scripture) shows it.
A scriptural text, moreover, shows that the meditation is necessary for, and restricted to, the sacrificial performance. For the text 'A Brahman priest who knows this saves the sacrifice, the sacrificcr, and all the officiating priests'--which declares that all priests are saved through the knowledge of the Brahman--has sense only on the understanding that that knowledge is not restricted to the Udgâtri, and so on (i.e. not to those priests who are engaged in carrying out the details of the sacrifices which are the 'bases' of the meditations).--The conclusion, therefore, is that those meditations are not restricted to the sacrifices, subordinate members of which serve as their 'bases.'--This terminates the adhikarana of 'like the bases.'