Is it possible that Hamza in any of its form has a Shaddah? Like this: ءّ،أّ،إّ،ىّٔ،ؤّ ? If yes, is there any place where this appears in the holy Qur’an? Because I’ve never seen it.
Wa alikom asslam,
Hamza with shaddah does not occur in a single case in Arabic or the Quran. Hamza is a stopping sound, where your vocal cords are closed, doubling that movement would be impossible.
Allah knows best.