Jamaat Salaah and Imaamat

Q: Because of the Musjid being overcrowded and the mimbar being an obstruction in the first saff of the Musjid, a muqtadi happened to stand in the first saff directly in front of the mimbar, and when he (muqtadi) went into sajdah, his head touched the first step of the mimbar (he basically made the sajdahs with his head touching the first step of the mimbar). In the above mentioned case, was his (muqtadi's) salaah valid since he carried out his sajdahs in this manner?

Q: In the Haram Sharif the gates of the masjid are closed early. Many people pray on the marble or in the street. At times there is a large space in between the saffs. Will the salah be valid if there is a large space in between the saffs on the marble or praying in the street? By praying on the marble outside the Haram sharif masjid or in the street, will a person get the 100 thousand reward because the gates of the masjid are closed early?

Q: I am at home and the zuhr prayer jamat will soon start in the masjid and I have only a few minutes to perform my 4 sunnats. If I perform the sunnats before I leave for the masjid, I will miss the beginning of the jamat (I will catch the last 1-2 rakats). Should I do this, or should I instead leave early to the masjid and pray the 4 sunnats after the fard, thus catching the jamaat from its beginning?

Q: What is the ruling regarding one who misses the jamaat and joins a masbooq while he is performing his missed rakaats? Will the salaah of such a person be valid? Similarly, can one perform his fardh salaah behind a person who is performing his sunnat or nafl salaah?

Q: Can a child stand with the man in the same row for Salaah. Does the child have to stand in a separate row. Is there any harm for the child to stand with the men. Mufti saheb if there is any hadeeth or reference please do mention it.

Q: I know there is more reward for Salaah prayed in congregation for men, please provide me with Hadith to support this fact.

Q: I am Islamically 14 and not sure if I am baaligh. I have released mazi and probably wadhi but not mani. Am I baaligh and can I perform Salaah as an Imaam?

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: 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?

Q: A married person who is secretly in contact with another unmarried woman but he is an Imam of a masjid also, Salaah performed behind him is valid or not?