SBE 48: The Vedanta-Sutras with commentary by Ramanuja, George Thibaut, tr.: First Pâda: 11. Where concentration of mind is possible...
11. Where concentration of mind (is possible), there; on account of there being no difference.
As the texts do not say anything as to special places and times, the only requisite of such places and times is that they should favour concentration of mind. This agrees with the declaration 'Let a man apply himself to meditation in a level and clean place, &c., favourable to the mind' (Svet. Up. II, 10).--Here terminates the adhikarana of 'the sitting one.'