My first question regarding first ayah of surah An nisa'. The word " Nisaa'" is read " Nisaa a" and stop. What is the Hukm. Jazakumullah

Question
My first question regarding first ayah of surah An nisa'. The word " Nisaa'" is read " Nisaa a" and stop. What is the Hukm. Jazakumullah
Answer
The word in aayah one of surah an-Nisaa' ends with a tanween fathah on the hamzah.  We read the alif with a four or five count medd ( medd waajib muttasil) and then pronounce the hamzah followed by an alif.  This rule is of the alif substituting for the tanween is called .  You can find more about it at the following link:
http://www.abouttajweed.com/the-mudood-the-lengthenings-/the-mudood-lengthenings-part-3.html

Wa iyyaakum.