I am actually making a transition from the indo-pak script of arabic to the othmani script. In regards to surah ya-seen 36:9, the tashdeed is missing on the letter "wow" (in othmani script). Can someone explain me the rules when it goes missing?
the othmani script version:
سَدًّا وَمِنْ
indo-pak version:
سَدًّا وَّمِنْ
Scans of the relevant portion can be found: here, here, here, here and here etc.