Salaah

Q: If I have filth on my clothes less than the size of a dirham and water touches it and the diameter increases from one dirham, can I pray in those clothes?

Q: When I recite my salaah, its very difficult for me to recite the word Rahman due to the sound of letter haa. The sound that comes out of my mouth is more like Raman. The rest of the recitation I don't have an issue. Is my salaah valid?

Q:

1. If I am praying behind the imam and I have a few rakats to pray, when do I stand up; after the imam's first salam or when he finishes both salams?

2. If I stand up after the first salam, is my prayer valid?

Q:

1. If I am offering my qadha namaz and iqamah is called for the next prayer, do I have to stop praying qadha?

2. If I prayed full qadha namaz in this situation, is my qaza prayer valid?

3. What if I am just about to complete my qadha prayer and iqamah is called for the next prayer?

Q: If a person fulfilled all his past sajdah sahw as a single sajdah instead of 2 sajdas due to ignorance of it, will qaza have to be made? 

Q: I pray all my salaah but most of the time when I read salaah there is no concentration (jamaat or alone). I don't know whether my salaah is accepted or not and I also get bad doubts.

Q: I wear a trousers belt, it's leather. I don't know what kind of animal skin was used to make this leather belt. I heard that if you wear leather made with pig skin and if you pray salah with it, it wouldn't be accepted, it's nearly impossible to tell if the leather is pig skin or not because where you buy it, it doesn't says. Would my salah be valid? 

Q: What is the masla regarding cell phones if musical ringtones play in salaah, how should he handle it?

If someone left his phone in his jacket, and the jacket is far and the ringtone plays music in salaah and disturbs the whole jamat then what should he do, break the salaah or continue with his salaah?

Q: If a woman in the state of haidh hears the azaan, then should she reply to the azaan? 

Q: Is it permissible to have 2 jamaats in the masjid for the same prayer?