Salaah

Salaah of men breaking if a woman stands besides him and Imaam making intention for leading women in salaah

Q:

1.1 If a woman is performing salaah in jama'ah with men, will her salaah invalidate the salaah of just the person immediately behind her or all those directly behind her whether there is a wall behind her or not?

1.2 Is there any difference between the Haram and non Haram in the above scenario?

2. If she stood a step or two behind him to his right or left and not directly in line with him, will his salaah break keeping in mind that she will be in line with him though not in Qiyaam, but in Rukoo' and Sajdah?

3. Some are of the opinion that since the gathering is large in the Haram, there is no need to for the Imaam to include the women in his niyyah, as in the case of Jumu'ah and Eid?

Paying for missed salaahs of a sick person

Q: My father is ill and unable to perform his salaah. I understand that I cannot perform the salaah for him. Is there any other way for me to cover up his salaah for him, and if so, how much will it cost to pay for his salaah? We estimate around 50 years without salaah. He has a house which just got paid off to the value of approx R800 000 and a car to the value of approx R40 000.

Muqtadi saying the takbeer when moving to different postures

Q: Is saying transitional takbeer (Allahu Akbar) when going to ruku, sujood, qiyaam obligatory upon the individual praying behind an imam or can he just follow the imam.

I have performed many prayers behind the imam and I thought I wasn’t obligated to say the takbeer besides takbeer al ihram. Would my previous prayers be invalid otherwise even if I were unaware? 

Repeating salaah if one found out that wudhu was not valid

Q: I was sitting after performing salaah when I noticed that there is a black, sticky substance on my foot through which water could not pass. It was the size of a whole round fingernail, and I had not seen it before.

Then, my brother told me that he saw it since 3 or 4 days on my foot. I had also led jamaat during these days. Will I have to repeat all the salaah that I had offered on these days? Will those who followed me in jamaat also have to repeat their salaah?