आसीनः, संभवात् ॥ ७ ॥
āsīnaḥ, saṃbhavāt || 7 ||
āsīnaḥ—Sitting; saṃbhavāt—because of the possibility.
7. (One has to practise Upasana) sitting, because (in that way alone) it is possible.
As Upasana or contemplation is a mental affair, the posture of the body is immaterial—says the opponent. This Sutra says that one has to meditate sitting, for it is not possible to meditate while standing or lying down. In Upasana one has to concentrate one’s mind on a single object, and this is impossible if one is standing or lying.