Brahma Sūtra 4.1.11
Śaṅkara
Advaita Vedānta
Sūtra
यत्रैकाग्रता तत्राविशेषात्
yatraikāgratā tatrāviśeṣāt
Sūtra translation
Where concentration of mind (is possible), there (meditation may be carried on), on account of there being no difference.
A doubt here arises with regard to direction, place, and time, viz. whether any restrictive rules exist or not.— Against the view of those
Rāmānuja
Viśiṣṭādvaita Vedānta
Sūtra
यत्रैकाग्रता तत्राविशेषात्
yatraikāgratā tatrāviśeṣāt
Sūtra translation
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
Madhva
Dvaita Vedānta
Sūtra
यत्रैकाग्रता तत्राविशेषात्
yatraikāgratā tatrāviśeṣāt
Sūtra translation
Meditation may be practised where, (when, etc.), concentration arises; for in that (in meditation or in knowledge), no difference is caused by particular spots, etc.
Only in that place, at that time, in that condition, etc., he should be (and practise meditation) where con- centration is possible. This is