Salaah

Q: A late comer joins me in salaah while I'm performing my sunnah salaah. Is it permissible for me to change my intention of performing sunnah salaah alone to performing in jamaat?

Q: Can sajdah shukr be done immediately and openly.

Q: Can Mufti Saheb please explain if a sutrah is needed in a large room that is not a musjid, e.g. The tents in Arafah, a hall, etc.

Also, when reading salaah alone at home, should one put a sutrah in front?

Q: How thick may a musallah (prayer mat) be? I bought a thick musallah (prayer mat) and I want to know that when performing sajdah on it, should the head and nose feel the earth or carpet below it (prayer rug) in order for the sajdah to be valid?

Q: Can I offer namaaz while wearing glasses?

Q: When is the sunnah time for the words to straighten the suffoof to be said. What is the ruling in the hanafi madhab regarding it?

Q: We have a small musallah in our area. My question is, I am hoping to perform salaah as the imaam with 1, 2 to 4 musallies every day, but most of the time, I'm reading salaah alone as the imaam in front. Will I still get the full reward of salaah with jamaat?

Q: Is it allowed to pray the 2 rakaat Sunnat e Muakkadah of Esha after I pray Witr prayer? Sometimes in emergency I skipp the sunnat and I wanted to pray it later.

Q: If I am performing the 4 sunnah muakkadah of Zuhr Salaah, and in the last 2 rakaats, I forget to read a surah after Surah Faatihah, but I only realize that I left this out after I have completed my salaah, is my salaah valid or should I repeat it?

Q: On Friday, when the imam comes out for the khutbah and the 2nd azaan is given in front of him, then should we read the dua after azaan verbally or should we read it in our heart since we have to adopt silence at that time?