Earlier you said kif ches amud B, now you say amud A. Next time be more
Beir halucha is kif ches amid beis continuing onto kif tes not only in regards to shma kif ches amid alef is in mishna brira regarding krias shma whereas he is clearly stating what should be covered, u don't have to be a rocket scientist to understand the connection between the two.
BTW what are you trying to get at with all this? u doubt the issur? or just a scholarly ambition to seeing things in their original text?