SBE 48: The Vedanta-Sutras with commentary by Ramanuja, George Thibaut, tr.: First Pâda: 15. And because he is declared to be the cause of thatra

15. And because he is declared to be the cause of thatra. 'For who could breathe, who could breathe forth, if that bliss existed not in the ether? He alone causes bliss' [paragraph continues] (Taitt. Up. II, 7). This means--He alone is the cause of bliss on the part of the individual souls.--Some one is here designated as the cause of bliss enjoyed by the souls; and we thus conclude that the causer of bliss, who must be other than the souls to which bliss is imparted, is the highest Self abounding in bliss. In the passage quoted the term 'bliss' denotes him who abounds in bliss, as will be shown later on.--A further reason is given in the next Sûtra.