Gemara:

Bava Kamma,  Sotah 

Halacha:

Kriyat HaTorah,  Tefillah 

Collections: R' Grunstein Proper Behavior During Laining

References: Bava Kamma: 82A ,  Sotah: 39A  

Description

During laining one is not allowed to speak even words of Torah. But when does this prohabition kick in: from the time you start to lain, or from the time the Torah is opened for an Aliya? Ramifcations go far beyond this law to the very CRUX of what's the point of laining in the first place.