What is the opinion of the Qur'an scholars for Iqlab (mun sakinah -> ba') and Ikhfa' Shafawi (mim sakinah -> ba')
1. Should we open our mouth in both cases?
2. Should we close our mouth in both cases?
3. Should we open our mouth (a little bit) in Iqlab and close it in Ikhfa' Shafawi?
If we should open our mouth, how should we do it? Should we open it from the beginning when we reading nun, should we close it first but open it when we're pronouncing ba', or should we open it the whole way?
If someone has an access to his teachers and don't know the answer, can you please relate this to your teachers?