Salaah

Musaafir changing his intention

Q: My question is regarding a musaafir:

A person left Verulam with the intention of going to Pietermaritzburg (this is safr distance). On his way, he stops in Chatsworth and changes his mind and says that he is going back home so he reads 4 rakaats asr in Chatsworth as he was told that he is no more a musaafir. Is this correct? When does he become a muqeem and does he have to repeat his asr salaah?

Total number of rakaats in the Fardh, Sunnat and Nafil of Zuhr Salaah

Q: Could you please specify how to read all the rakaats of Zuhr Salaah:

E.g. Zuhr - Four Sunnah (Surah Faatihah and a Surah in all four rakaats) then four fardh (Surah Faatihah and a Surah in the first two and in the second two, only Surah Faatihah), then is two Sunnah (Surah Faatihah and a Surah in both rakaats) and last for Zuhr is two nafl (Surah Faatihah and a Surah in both rakaats).

Saying the word "sana" and "durood" before reciting sana and durood in salaah

Q:

1. Zaid said the word sana before reciting the complete subhanakalluhamma wabihamdika... in salah, is the salah valid?

2. Zaid said the word Durood Ebrahim before reciting the whole Durood Ebrahim in salah, is the salah valid?

3. Zaid said the word dua before reciting the whole dua in salah, is the salah valid?

Making sajdah-e-sahw after salaah

Q: Is it right to perform sajda-e-sahw if someone forgets to make it within salaah? When I remember, without reciting anything else, I just to sit down and recite attahiyyaat upto (abduhu warasuluh) then one salam on the right side then two sajdahs of sahw and then attahiyyaat, durood and dua and then 2 salaam.