Salaah

Q: I have many qaza namaz remaining. I want to offer a nafil namaz on Friday for 7 weeks for sharh e sadr. Can I do this or first I have to offer qaza salats?

Q: If Salatul Esha is missed by someone, then how many rakaats of salaah should be offered?

Q: This weekend I was out musafir for a few days with a few friends. We came to a masjid to perform salaah. Two friends we finished making wuduh and the third was still making wuduh so the two of us decided to start our farad thinking the 3rd brother will join us. Our first rakat was almost finished when the third brother finished his wudu. The brother didn't join us but performed his salah on his own. When asked why he didn't join us he said because we didn't wait for him. Is this brother sinful for doing that?

Q: We had a tashkeel of 17 days in Karachi. When we reached the railway station for Lahore we offered four rakaats of asr before the train left from the station. Is it done or we should perform two rakaats?

Q: If one just built up a lot of sweat after playing sports and it's time for Salaah, can he perform his Salaah with all that perspiration?

Q: After shaving at home without bathing, can a person go for namaaz?

Q: Can we offer Salaah wearing a T-shirt with the British flag or any other country's flag printed on it?

Q: After shaving the beard can a person perform Salaah? Will it be valid?

Q: Can a wife travel, say from South Africa to India , with two minor kids, without any mahram?

Q: I live in a non-muslim country so every time I go to mosque for prayer, I call my brother on his cell phone so he can listen to the Qiraat of the Imaam and pray behind him (He lives in a different city where there is no mosque nearby). Is it allowed to pray like this?