There is no restriction on Remembrance, you can do it sitting, standing, with Ablution, without ablution. But the Elders advise that it is better to do it with Ablution. (Remembrance, nevertheless, must be done under guidance of a complete Shaikh.)
(Sitting (majlis) on Monday, March 14, 2011AC)
(Sitting (majlis) on Monday, March 14, 2011AC)