I think in scenes in promo are not in order.
I believe the scene where Murtasim pulls are out of the car is from their home only. Meerab knew that Murtu was going to meet MZ, so she went and sat in the car.
When Murtasim reaches the car, he’ll see Meerab already seated in, he pulls are her out and gives her azadi, even before MB asks him to do so.
MB wants them to have a divorce and Murtasim’s “azadi” is not divorce for now.
Meerab doesn’t leave this time even when she is given the “azadi” she wanted.
I know they showed Murtu leaving in a coat over black kurta, but he is in black kurta in all there scenes.