Student or Learner
A: just a bit of gentle leg pulling. and not about jama'at but about the left
B: I will now meditate on the relative costs of my loyalties and leg-pulling :)
Shouldn't it be "at the relative cost of"?
(It is taken from twitter! I will add tweets preceding these if further context is needed for this question)
As an NES but not a teacher, I would use "meditate on".
I would not consider using "meditate at".