Salaah

Q: Is qaza namaz acceptable if the prayer was skipped on purpose due to laziness?

Q: If one clears their throat in salah due to excess phelgm, does wudu break? Heavenly ornaments says one can clear their throat if compelled to do so.

Q: About 2 months ago when I prayed Dhuhr in school, one girl changed the direction of the prayer and I prayed with her even though iI had severe doubts about if it was the right direction. I then found out that it wasn't the right direction but I didn't repeat the prayer. Should I redo the prayer? And is it as if I didn't pray? I had forgotten about this incident, it recently came to my mind, what should I do?

Q: The is a hadith which states the recitation of ayatul kursi after every fardh salah. I want to know does it mean immediatly after fardh or after sunnat?

Q: I would like to know if the salaah of a female is accepted if her ankle becomes exposed (because of the knee bending) while in jalsa position although the pants or aabyah is long enough when standing?

Q: A musaafir joined a muqeem imam in a 4 rakaat salaah. His wudhu broke, so he had to leave. So when he repeats the salaah must he read 2 rakaats qasr or should he perform full 4 rakaats?

Q: Please advice if a lady has a long dress or abaya on that is not see through must she still wear a pants underneath when praying namaaz?

Q: If in "Ihdeenas-Siratal-Mustaqeem", I recited dee with a daad mistakenly instead of daal does this invalidate the namaz? I don't know for sure if I done it, but it seems likely so should I repeat the namaz or is it an acceptable mistake? I didn't repeat it afterwards.

Q:During tashahhud one says "..as salaamu alayna ayyuhan nabiyyu" instead of "..as salaamu alayka ayyun nabiyyu". Does this mistake invalidate salaah?

Q: It was narrated that Abu Sa’eed al-Khudri (may Allaah be pleased with him) said: A woman came to the Prophet (peace and blessings of Allaah be upon him) when we were with him and said: “O Messenger of Allaah, my husband Safwaan ibn al-Mu’attal does not pray Fajr until the sun has risen.” Safwaan was with him, so he asked him about what she had said, and he said: “O Messenger of Allaah, we are a family who are known not to wake up until the sun has risen.” He said: “When you wake up, then pray.” Narrated by Abu Dawood, 2459; classed as saheeh by Shaykh al-Albaani in Irwa’ al-Ghaleel, 7/65. 

I can't pray fajr salah because I have sleep problems.  I don't fall asleep easily and if I wake up for fajr I can't fall asleep again so can I pray fajr at zuhr time, would it be valid and am I a kafir if I don't pray fajr on time. Above hadith it says our prophet allowed a man to pray fajr after sunrise.