Salaah

Q:

1. In the witr prayer, is it makrooh tahreemi, makrooh tanzeehi, or permissible to recite a surah in the third rakat which is longer by three verses or more than the surah which was recited in the first rakat and is it makrooh tahreemi, makrooh tanzeehi, or permissible to recite a surah in the third rakat which is longer by three verses or more than the surah which was recited in the second rakat?

2. In a fard prayer or in a wajib prayer, if two surahs have the same number of verses but not the same number of words then would it be makrooh tahreemi, makrooh tanzeehi, or permissible to recite the surah which has less words in the first rakat and to recite the surah which has more words in the second rakat?

Q: I commenced performing two rakaats of tahiyyatul masjid, and thereafter, the jamaat salaah started. I immediately made salaam to come out of the salaah. Do I make qadha of the two rakaats which I commenced and broke?

Q: Is it mandatory or necessary for women to wear something under the gown (like to wear a shalwar or pants under a night dress) in order to perform namaaz or can she read her namaaz just wearing the gown or night dress which covers the whole body up to the feet but nothing inside. Will her namaaz be valid?

Q: If a person prays while wearing a t-shirt that has depictions of creatures on it, is his prayer valid or should he repeat it?

Q: If a person prays with his t-shirt inserted in his pants, is his prayer valid or should he repeat it?

Q: My mother is 83 years old and has dementia. She cannot perform salaah because she cannot remember and is not paak. What will be her situation for the missed salaah?

Q: With the distances of one meter at the Masjid, some people prefer to perform their salaat in jamaat in other private places (like in a house) with their shoulders together. They perform the five salaat and the jumuah salaat in houses with their shoulders together? Is it correct? Or is it better for these people to come to the Masjid ?

Q: If someone offers only the fardh salaah and leaves out performing the sunnah salaah, then what is the Islamic ruling? Is it a sin to leave out the sunnah salaah and only offer the fardh?

Q: How does one humble oneself in salaah?

Q: I would like to confirm if the following is correct: 

1. Someone told me that when reading salaah, when facing the qibla, if you are a few degrees wrong then it is maaf.

2. If someone is reading salaah facing the wrong direction then you must turn them towards the right direction or tell them and they can turn to the right direction without breaking their salaah and their salaah will be accepted.