How can one pronounce a nun that has sheddah which you have to stop on?
When the noon has a shaddah on it and is the last letter of the word, such as in:
; we read the noon with the most complete ghunnah. We read this long ghunnah whether stopping or continuing. It is important to give the ghunnah of the noon the long timing when stopping otherwise we may make the mistake of dropping a letter of the Glorious Qur'an.
May Allah protect us from making mistakes while reciting the Qur'an. Ameen.