समान एवञ्च, अभेदात् ॥ १९ ॥
samāna evañca, abhedāt || 19 ||
samāne—In the same Sakha; evam—(it is) like this; ca—also; abhedāt—on account of non-difference.
19. In the same Sakha also (it is) like this (i.e. there is unity of Vidya), on account of the non-difference (of the object of meditation).
In the Agnirahasya in the Vajasaneyi Sakha there is a Vidya called Sandilya Vidya, in which occurs the passage, “Let him meditate on the Self which consists of mind” etc. (Sat. Br. Madhy. 10. 6. 3. 2). Again in-the Brihadaranyaka, which belongs to the same Sakha we have, “This Being identified with the mind” etc. (Brih. 5. 6. 1). Do these two passages form one Vidya, in which the particulars mentioned in either text are to be combined, or are they different Vidyas? The Sutra says that they are one Vidya, since the object of meditation in both cases is the Self consisting of mind. The ride as regards the combining of particulars of a similar Vidya in the same Sakha is the same as in the case of such Vidyas occurring in different Sakhas. Therefore the Sandilya Vidya is one.