salaah

Q: Is salaah permissible on memory foam musallas?

Q: A brother travels on an aeroplane for 19 hours from point A to B. He does not perform any salaah on the aeroplane. When he reaches his destination he makes Qadha of the Qasr salaat he missed. Is what he did permissible?

Q: I woke up for fajr and thought there was not enough time to read the sunnahs, so I read the fard. After completing the fard, I realized there was still time left, so I read the sunnahs of Fajr after praying the fard of Fajr, within the time of Fajr. are the sunnahs valid? Or will I need to redo them after sunrise?

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: My question is regarding a woman doing bina if she involuntarily breaks her wudhu in Salaah. One of the conditions of bina is that the satr should not become uncovered for bina to be correct. But if the woman goes to redo her wudhu she will uncover her arms and head and ankles etc to do wudhu, so would this still mean the bina is valid?

Q: My question is regarding sajdah-e-tilaawah during salaah. If I mistakenly performed two sajdahs instead of one, what should I do?