19. In the same (Sâkhâ also) it is thus (i.e. there is unity of vidyâ), on account of the non-difference (of the object of meditation).
In the Agnirahasya forming part of the Vâgasaneyi-sâkhâ there is a vidyâ called the Sândilya-vidyâ, in which we meet with the following statement of particulars, 'Let him meditate on the Self which consists of mind, which has the prâna for its body and light for its form,' &c.--In the Brihad-âranyaka again, which belongs to the same Sâkhâ, we read (V, 10,6), 'That person consisting of mind, whose being is light, is within the heart, small like a grain of rice or barley. He is the ruler of all, the Lord of all--he rules all this whatsoever exists.'--A doubt here presents itself whether these two passages are to be taken as one vidyâ in which the particulars mentioned in either text are to be combined or not.
The pûrvapakshin maintains that we have to do with two separate vidyâs whose particulars cannot be combined. For