Dear brothers and sisters,
In last word of Suratul Kafirun, ayah/verse 4, 'ayn with fatah/jabar,ba with fatah/jabar, dal with saakunah/sakin,ta with shuddah/tashdid and fatah/jabarfollowed by mim with saakunah/sakin. How should this word be sounded- Abadhtum with dal followed by ta or Abattum ba catching ta. Your help in this regard will be appreciated-
Answer
Assalaam alaikum.
The word
has a 
saakinah meeting a 
. These letters share the same articulation point, but have different characteristics- meaning they have 
relationship. When a saakinah meets a, we merge the completely into the and the acquires a shaddah because it is now two letters merged into one. We therefore do not pronounce the at all because it has merged into the the (there is idhgaam of the into the ), and the is read with a shaddah-as written. We pronounce the 
with a fathah, then go directly to the with the shaddah and fathah. You are most welcome.