Salaah

Q: If the ankle of a woman is exposed for the duration of her entire salaah, is the salaah valid?

Q: I have many qadhaas over the past 3 or 4 years. I've tried guessing but I have absolutely no idea, records, nothing. I usually pray all 5 prayers on time now, so would it be okay for me to start praying my qadhaas without making an estimate?

As I've mentioned, I don't have the slightest clue with which to make an educated guess. The longer I keep trying to estimate, the longer it gets put off. It's been two years already.

Q: If one suffers from knee pain, can one pray on prayer mats that are softer and thicker at the feet and knees end than the sajdah end, such that the sajdah area becomes lower than the feet and knees?

Q: Can you change Zuhr time of a musjid on heritage day or any public holiday of the kuffaar?

Q: My wife is expecting and colostrum/milk began expelling. I would like to know the following rulings:

1. If the clothing becomes soiled with a few drops, can salaah be performed?

2. After birth, if the clothing becomes soiled with actual breastmilk, can salaah then be performed?

Q: What would be an approximate time that one has to read Asr Salaah from the time Asr sets in until the makrooh time. 

Q: Please advise on all of the surahs and aayaat which are sunnat to recite in the Fajr Sunnats.

Q:

1. I was reading 4 rakaats fardh of Zuhr Salaah. After the first rakaat, I sat down and started reading tashahhud. I realised my error, but I completed the tashahhud, stood up and after the second rakaat did the tashahhud again and completed the rest of my salaah as normal. I did a sajdah sahw at the end, but I didn't recite the tasbeeh in the sajdahs. Is my salaah valid?

2. Previously, I was also reading 4 rakaat fardh of another salaah. In the second rakaat, after reading Surah Fatiha, I untied my hands to go in ruku. I quickly realised my mistake, tied my hands again and read a surah and continued the rest of the salaah as normal. Was I meant to read sajdah sahw in this situation?

Q: If a woman gets her haidh during the salaah time, and she hadn’t yet performed the salaah of the time, will qadha of that salaah become compulsory upon her?

Q: Are women allowed to perform salaah behind the imaam in the two Harams?