I nedd to know while stopping at the hamza with fathatain, do we stretch it like an alif maddah?

Question
Assalamu 'Alaikum.I nedd to know while stopping at the hamza with fathatain, do we 
stretch it like an alif maddah? Since we do not have an alif written after hamza with fathatain, I can confused whether to red it like alif maddah while stopping there or to read it as a single fathah.

Answer
Wa alaikum assalaam wa rahmatullahi wa barakaatuh
When there is a tanween fathah and we stop on the word, there is a substitute of an alif for the tanween and we lengthen it two vowel counts, whether the alif is written-which is the usual case- or whether it is not written as in the case when a hamzah is the last letter.  An exception to this is the female ha' with a tanween fathah, in this case we do not substitute the tanween with an alif when stopping.
For more details, please see:
http://www.abouttajweed.com/the-mudood-the-lengthenings-/the-mudood-lengthenings-part-3.html